A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

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A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

A. Floor is smooth and wall is rough

B. Floor is rough and wall is smooth

C. Both floor and wall are rough

D. Both floor and wall are smooth

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A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is

A. 40 sec

B. 30 sec

C. 20 sec

D. 15 sec

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The centre of gravity of a homogenous body is the point at which the whole

A. Volume of the body is assumed to be concentrated

B. Area of the surface of the body is assumed to be concentrated

C. Weight of the body is assumed to be concentrated

D. All the above

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For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

A. 60 %

B. 65 %

C. 70 %

D. 75 %

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A satellite goes on moving along its orbit round the earth due to

A. Gravitational force

B. Centrifugal force

C. Centripetal force

D. None of these

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If α is the angular acceleration of a compound pendulum whose angular displacement is θ, the frequency of the motion is

A. 2π √(α/θ)

B. (1/2π) √(α/θ)

C. 4π √(α/θ)

D. 2π √(α - θ)

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A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

A. 20 m/sec

B. 30 m/sec

C. 40 m/sec

D. 50 m/sec

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A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

A. 1/3

B. 2/3

C. 1/9

D. 8/9

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From a circular plate of a diameter 6 cm is cut out a circle whose diameter is equal to the radius of the plate. The C.G. of the remainder from the centre of circular plate is at a distance of

A. 2.0 cm

B. 1.5 cm

C. 1.0 cm

D. 0.5 cm

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Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

A. 2 sec

B. 3 sec

C. 4 sec

D. 5 sec

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If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be

A. 1

B. 2

C. 3

D. 4

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The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface

A. Uneven distribution of the gravitational field

B. Gravity of the sun and the moon

C. Aerodynamic forces

D. None of these

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Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

A. 20 kg

B. 25 kg

C. 30 kg

D. 35 kg

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The unit of impulse, is

A. kg.m/sec

B. kg.m/sec

C. kg.m/sec²

D. kg.m/sec

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Which of the following is a scalar quantity?

A. Energy

B. Momentum

C. Torque

D. Impulse

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If α and u are the angle of projection and initial velocity of a projectile respectively, the horizontal range of the projectile, is

A. u² sin α/g

B. u² sin² α/g

C. u² sin α/2g

D. u² sin² α/2g

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Pick up the correct statement from the following:

A. If two equal and perfectly elastic smooth spheres impinge directly, they interchange their velocities

B. If a sphere impinges directly on an equal sphere which is at rest, then a fraction ½(1 - e2) the original kinetic energy is lost by the impact

C. If two equal spheres which are perfectly elastic impinge at right angles, their direction after impact will still be at right angles

D. All the above

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In a simple harmonic motion, the position of equilibrium is always

A. Stable

B. Unstable

C. Neutral

D. None of the above

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In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

A. 30

B. 50

C. 60

D. 80

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One half of a vibration of a body, is called

A. Period time

B. Oscillation

C. Beat

D. Amplitude

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Impulse can be obtained from a

A. Force-displacement diagram

B. Force-time diagram

C. Velocity-time diagram

D. Velocity-displacement diagram

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The reaction RB of the roller support B of the beam shown in below figure is

A. 10.8 t

B. 10.6 t

C. 10.4 t

D. 10.2 t

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A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

A. 16 m/sec

B. 18 m/sec

C. 20 m/sec

D. 22 m/sec

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The ratio of the reactions R_A and R_B of a simply supported beam shown in below figure is

A. 0.50

B. 0.40

C. 0.67

D. 1.00

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For a simple pendulum, time period for a beat, is

A. π √(l/g)

B. π √(2l/g)

C. π √(g/2l)

D. π √(l/2g)

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If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

A. Virtual work

B. Imaginary work

C. Zero work

D. Negative work

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The unit of Moment of Inertia of a body, is

A. m

B. m²

C. m³

D. m⁴

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A smooth cylinder lying on its convex surface remains

A. In stable equilibrium

B. In unstable equilibrium

C. In neutral equilibrium

D. Out of equilibrium

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A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

A. 15

B. 18

C. 20

D. 26

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Total no of instantaneous centres of a machine having n links, is

A. n/2

B. n

C. (n - 1)

D. n (n - 1)/2

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The member which does not carry zero force in the structure shown in below figure, is

A. ED

B. DC

C. BC

D. BD

Discuss this answer

Accepted Answer

D. Both floor and wall are smooth

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

Correct Answer :

Show all Applied Mechanics and Graphic Statics MCQ

Related Questions

A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is

The centre of gravity of a homogenous body is the point at which the whole

For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

A satellite goes on moving along its orbit round the earth due to

If α is the angular acceleration of a compound pendulum whose angular displacement is θ, the frequency of the motion is

A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

From a circular plate of a diameter 6 cm is cut out a circle whose diameter is equal to the radius of the plate. The C.G. of the remainder from the centre of circular plate is at a distance of

Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be

The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface

Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

The unit of impulse, is

Which of the following is a scalar quantity?

If α and u are the angle of projection and initial velocity of a projectile respectively, the horizontal range of the projectile, is

Pick up the correct statement from the following:

In a simple harmonic motion, the position of equilibrium is always

In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

One half of a vibration of a body, is called

Impulse can be obtained from a

The reaction RB of the roller support B of the beam shown in below figure is

A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

The ratio of the reactions R_A and R_B of a simply supported beam shown in below figure is

For a simple pendulum, time period for a beat, is

If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

The unit of Moment of Inertia of a body, is

A smooth cylinder lying on its convex surface remains

A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

Total no of instantaneous centres of a machine having n links, is

The member which does not carry zero force in the structure shown in below figure, is

Also checkout

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

Correct Answer :

Show all Applied Mechanics and Graphic Statics MCQ

Related Questions

A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is

The centre of gravity of a homogenous body is the point at which the whole

For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

A satellite goes on moving along its orbit round the earth due to

If α is the angular acceleration of a compound pendulum whose angular displacement is θ, the frequency of the motion is

A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

From a circular plate of a diameter 6 cm is cut out a circle whose diameter is equal to the radius of the plate. The C.G. of the remainder from the centre of circular plate is at a distance of

Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be

The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface

Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

The unit of impulse, is

Which of the following is a scalar quantity?

If α and u are the angle of projection and initial velocity of a projectile respectively, the horizontal range of the projectile, is

Pick up the correct statement from the following:

In a simple harmonic motion, the position of equilibrium is always

In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

One half of a vibration of a body, is called

Impulse can be obtained from a

The reaction RB of the roller support B of the beam shown in below figure is

A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

The ratio of the reactions RA and RB of a simply supported beam shown in below figure is

For a simple pendulum, time period for a beat, is

If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

The unit of Moment of Inertia of a body, is

A smooth cylinder lying on its convex surface remains

A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

Total no of instantaneous centres of a machine having n links, is

The member which does not carry zero force in the structure shown in below figure, is

Also checkout

The ratio of the reactions R_A and R_B of a simply supported beam shown in below figure is