Laws of Motion questions
1031 published questions with worked solutions.
- The length of a spring is l and its force constant is k. When a weight W is suspended from it, its length increases by x. If the...
- A spring watch would be taken to the moon, it
- If a watch with a wound spring is taken on the moon it
- Consider a simple pendulum of length 1 m. Its bob performs a circular motion in horizontal plane with its string making an angle...
- A simple spring has length l and force constant k. It is cut into two springs of length l_1 and l_2 such that l_1 = nl_2 (n = an...
- A simple pendulum has length 2 m and a bob of mass 100 gram. It is whirled in a horizontal plane. If the string breaks under a...
- A spring has length 'l' and force constant 'K'. If it is cut into two springs of length 'l₁' and 'l₂' such that, l_1=nl_2 (n is...
- Centripetal acceleration of electron in the first Bohr orbit will be
- Two particles having mass 'M' and 'm' are moving in a circular path having radius R & r respectively. If their time period are...
- A cricketer catches a ball of mass 150 gm. in 0.1 second moving with speed 20 ms ^ -1 . Then he experiences force of : -
- On the horizontal surface of a truck a block of mass 1 kg is placed ( = 0.6) and truck is moving with acceleration 5 m/s ^2 then...
- A lift of mass 1000 Kg which is moving with acceleration of 1 m/s^2 in upward direction, then the tension developed in string...
- A particle moves along a circle of radius ( 20 ) m with constant tangential acceleration. If the velocity of the particle is 80...
- A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5 m/s ^2. What...
- A block of mass m is placed on a smooth wedge of inclination . The whole system is accelerated horizontally so that the block...
- Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary to keep the belt moving with a constant...
- A roller coaster is designed such that riders experience "weightlessness" as they go round the top of a hill whose radius of...
- A body, under the action of a force F = 6 i - 8 j + 10 k , acquires an acceleration of 1 m/s ^2. The mass of this body must be:
- The mass of a lift is 2000 kg . When the tension in the supporting cable is 28000 N , then its acceleration is:
- A gramophone record is revolving with an angular velocity . A coin is placed at a distance r from the centre of the record. The...
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