Work, Energy and Power questions
712 published questions with worked solutions.
- A body of moment of inertia of 3 kg - m^2 rotating with an angular velocity of 2rads^ -1 has the same kinetic energy as a mass of...
- A sphere is suspended by a thread of length l. What minimum horizontal velocity has to be imparted the ball for it to reach the...
- In vertical circular motion, the ratio of kinetic energy of a particle at highest point to that at lowest point is [MHT-CET 2023,...
- A solid sphere of mass 2 kg is rolling on a frictionless horizontal surface with velocity 6 m/s. It collides on the free end of...
- A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal...
- A stone of mass 1 kg is tied to a string 2 m long and is rotated at constant speed of 40 ms^ -1 in a vertical circle. The ratio...
- A rod of length 'L' is hung from its one end and a mass 'm' is attached to its free end. What tangential velocity must be...
- A particle is performing vertical circular motion. The difference in tension at lowest and highest point is [MHT-CET 2022,...
- A sphere of mass 'M' is attached to one end of a metal wire having length 'L' and diameter 'D'. It is whirled in a vertical...
- A stone is tied at the end of a rope of length 1 m and whirled in a vertical circle. The ratio of velocity at highest point to...
- A heavy mass is attached at one end of a thin wire and whirled in a vertical circle. The chances of breaking the wire are maximum...
- A bucket containing water is revolved in a vertical circle of radius 'r'. To prevent the water from falling down, the minimum...
- The mass 'm' is rotating in vertical circle of radius 'R'. The difference in its kinetic energy at the top and the bottom of the...
- A bob of a simple pendulum of mass 'm' is displaced through 90° from mean position and released. When the bob is at lowest point,...
- A body attached to one end of a string performs motion along a vertical circle. Its centripetal acceleration, when the string is...
- A weightless string can support a tension up to 30 N. A stone of mass 0.5 kg is tied to its one end and is revolved in a circular...
- A bucket containing water is revolved in a vertical circle of radius r. To prevent the water from falling down, the minimum...
- A stone of mass 200 g attached at the end of inextensible string 1 m long is whirled in a vertical circle. If the speed of the...
- A weightless thread can bear tension upto 3.7 kgwt. A stone of mass 500 gram is tied to its one end and revolved in circular path...
- A pendulum has length 0.4 m and maximum speed 4 m/s. When the length makes an angle 30^ with the horizontal, its speed will be [...
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