Related Questions
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4
The numbers of funicular polygons which can be drawn to pass through two specified points in the space diagram are
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4
The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is
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4
The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed
B. Tangentially at that point
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4
A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If r is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be
A. [r (π + 0.25)]/(π - 0.5)
B. [r (π - 0.5)]/(π + 0.25)
C. [r (π - 0.25)]/(π - 0.5)
D. [r (π + 0.25)]/(π + 0.5)
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4
It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to
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4
The ends of a string weighing w/metre are attached to two points at the same horizontal level. If the central dip is very small, the horizontal tension of the string throughout is
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If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is
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Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis?
A. Disc with larger density
B. Disc with smaller density
C. Both discs will have same rotational inertia
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4
A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is
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4
At the instantaneous center, the velocity of the moving lamina at any instant is
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The diagram showing the point of application and line of action of forces in their plane is called
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4
Kinetic friction may be defined as
A. Friction force acting when the body is just about to move
B. Friction force acting when the body is in motion
C. Angle between normal reaction and resultant of normal reaction and limiting friction
D. Ratio of limiting friction and normal reaction
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4
If g1 and g2 are the gravitational accelerations on two mountains A and B respectively, the weight of a body when transported from A to B will be multiplied by
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4
The motion of a bicycle wheel is
C. Rotary and translatory
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4
A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is
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4
The reaction RB of the roller support B of the beam shown in below figure is
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Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is
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4
Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by
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4
The maximum displacement of a particle executing S.H.M. corresponds to
A. Zero potential energy and maximum kinetic energy
B. Zero kinetic energy and maximum potential energy
C. Maximum kinetic energy and maximum potential energy
D. Minimum kinetic energy and minimum potential energy
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4
A system of coplanar forces acting on a rigid body can be reduced to
C. One force and one couple only
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A particle moving with a simple harmonic motion, attains its maximum velocity when it passes
A. The extreme point of the oscillation
B. Through the mean position
C. Through a point at half amplitude
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A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is
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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
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Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down
A. Rubber and lead balls undergo equal changes in momentum
B. Change in momentum suffered by lead ball is less that of rubber ball
C. Momentum of rubber ball is less than that of lead ball
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In a simple harmonic motion, the position of equilibrium is always
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A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was
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4
For a particle moving with a simple harmonic motion, the frequency is
A. Directly proportional to periodic time
B. Inversely proportional to periodic time
C. Inversely proportional to its angular velocity
D. Directly proportional to its angular velocity
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4
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics?
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The total time of collision and restitution of two bodies, is called
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Maximum efficiency of a screw jack for the angle of friction θ, is
C. (1 + sin θ)/(1 - sin θ)
D. (1 - sin θ)/(1 + sin θ)