EXAMIANS
The velocity of a moving body, is
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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
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One end of an elastic string of natural length ‘l’ and modulus ‘X’ is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance ‘x’, held at rest and then released.The motion is
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If the given forces P₁, P₂, P₃ and P₄ are such that the force polygon does not close, then the system will
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The unit of rotational inertia of a body in C.G.S system is
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A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is
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The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at
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A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec²)
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The Centre of gravity of a 10 × 15 × 5 cm T section from its bottom, is
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The frequency of oscillation on moon as compared to that on earth, will be
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