Exams › NEET › Physics

The M.I. of a body about the given axis is 1.2 kgm 2 initially the body is at rest. In order to produce a rotational kinetic energy of 1500 joule an angular acceleration of 25 rad/sec 2 must be applied about that axis for a duration of

1. 4 sec
2. 2 sec
3. 8 sec
4. 10 sec

Correct answer: 2 sec

Related NEET Physics questions

• A force F = 4i + 10j (Newtons) acts at a point with position vector r = -5i + 3j (metres) relative to the origin on the rotation axis. What is the torque acting on the body?
• If angular displacement of a particle moving on a curved path be given as,  = 1.5 t + 2t 2 , where t is in sec, the angular velocity at t = 2 sec, will be
• A solid sphere rolls down on two different inclined planes of same height, but of different inclinations. In both cases
• All the particles of a rigid body in a rotatory motion have axis of rotation:
• A fan is running at 3000 rpm. It is switched off. It comes to rest by uniformly decreasing its angular speed in 10 seconds. The total number of revolution in this period.
• From the theorem of perpendicular axes. If the lamina is in X- Y plane

⚔️ Practice NEET Physics free + battle 1v1 →