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Free Online Mock Physics Multiple Choice Test on Rotational Motion
Sub Category : Rotational Motion Test : 1 Time Left :
1) A particle moves along a circle of radius (20/pi)m with constant tangential acceleration. If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun, the tangential acceleration is(1) 40 pi m/s2 (2) 640 Pi m/s2 (3) 160 pi m/s2 (4) 40 pi m/s2.
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2) The acceleration of a particle performing a uniform circular motion is:(1) v2/r (2) vomega2 (3) romega (4) zero (5) omegapower2/r
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3)A one kg stone attached to the end of a 60 cm chain is revolving at the rate of 3 revolutions/second. If after 30 second, it is making only one revolution per second, find the mean torque
(1) 0.45 N m (2) 0.35 N m (3) 0.25 N m (4) 0.15 N m
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4) A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that
(1) its kinetic energy is constant (2) its acceleration is constant (3) it velocity is constant (4) it moves in a straight line
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5) Which of the following statements is FALSE for a particle moving in a circular with a constant angular speed?
(1) The acceleration vector points to the centre of the circle (2) The acceleration vector is tangent to the circle (3) The velocity vector is tangent to the circle (4) The velocity and acceleration vectors are perpendicular to each other
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