Systems of Particles and Rotational Motion questions
1884 published questions with worked solutions.
- A uniform rod of total length 2L has mass per unit length m. The moment of inertia of the rod about an axis passing through its...
- A spherical shell has mass M and radius R. Moment of inertia about its diameter will be
- The angular momentum of a wheel changes from 2L to 5L in 3 seconds. What is the magnitude of the torque acting on it?
- A constant torque of 31.4 N-m is exerted on a pivoted wheel. If the angular acceleration of the wheel is 4 rad/sec ^2, then the...
- A string is wound round the rim of a mounted flywheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the...
- A wheel having moment of inertia 2 kg-m ^2 about its vertical axis rotates at the rate of 60 rpm about this axis. The torque...
- A ladder rests against a frictionless vertical wall, with its upper end 6 m above the ground and the lower end 4 m away from the...
- A constant torque of 1000 N-m turns a wheel of moment of inertia 200 kg-m ^2 about an axis through the centre. Angular velocity...
- Very thin ring of radius R is rotated about its centre. Its radius will
- A 10 kg body hangs at rest from a rope wrapped around a cylinder 0.2 m in diameter. The torque applied about the horizontal axis...
- A torque of 30 N-m is applied on a 5 kg wheel whose moment of inertia is 2 kg - m ^2 for 10 sec. The angle covered by the wheel...
- Turning effect is produced by
- ABC is an equilateral triangle with O as its centre. F_1, F_2, F_3 represent three forces acting along the sides AB, BC and AC...
- What constant force, tangential to the equator, should be applied to the earth to stop its rotation in one day?
- A uniform rod AB of length l and mass m is free to rotate about point A. The rod is released from rest in the horizontal...
- A force F=4 -5 +3 k is acting at a point r_1= +2 +3 k. The torque acting about a point r_2=3 -2 -3 k is
- If the external torque acting on a system is zero, then
- The instantaneous angular position of a point on a rotating wheel is given by (t)=2t^3-6t^2. The torque on the wheel becomes zero...
- A mass of 10 kg connected at the end of a rod of negligible mass is rotating in a circle of radius 30 cm with an angular velocity...
- An automobile engine develops 100 kW when rotating at a speed of 1800 rev/min. What torque does it deliver?
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