Related Questions
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When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is
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The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is
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4
The motion of a particle round a fixed axis is
D. Translatory as well as rotary
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Two non-collinear parallel equal forces acting in opposite direction
D. Constitute a moment of couple
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During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
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The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
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The impact between two lead spheres is approximately equal to an __________ impact.
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When trying to turn a key into a lock, following is applied
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Joule is the unit of
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In order to completely specify angular displacement by a vector, it must fix
A. Direction of the axis of rotation
B. Magnitude of angular displacement
C. Sense of angular displacement
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If the gravitational acceleration at any place is doubled, then the weight of a body will be
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Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
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The total motion possessed by a body, is called
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In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.
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The C.G. of a plane lamina will not be at its geometrical centre in the case of a
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The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)
A. y = (gx²/2u² cos²α) + x. tanα
B. y = (gx²/2u² cos²α) - x. tanα
C. y = x. tanα - (gx²/2u² cos²α)
D. y = x. tanα + (gx²/2u² cos²α)
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A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span
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Which of the following is the example of lever of first order?
C. Pair of clinical tongs
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Which of the following is not a vector quantity?
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Which of the following is not the unit of distance?
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The time of flight of a projectile on downward inclined plane depends upon
B. Angle of inclination of the plane
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The amplitude is always __________ radius of the circle.
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Frictional force encountered after commencement of motion is called
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One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring.)
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The velocity ratio of a first system of pulleys with 4 pulleys is
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According to law of triangle of forces
A. Three forces acting at a point will be in equilibrium
B. Three forces acting at a point can be represented by a triangle, each side being proportional to force
C. If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
D. If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
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4
If a body is acted upon by a number of coplanar non-concurrent forces, it may
A. Rotate about itself without moving
B. Move in any one direction rotating about itself
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The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.
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The moment of inertia of a solid sphere of mass m and radius r is
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A framed structure is imperfect, if the numbers of members are __________ (2j - 3).