Laws of Motion questions
1031 published questions with worked solutions.
- The upper half of an inclined plane of inclination θ is perfectly smooth while the lower half is rough. A body starting from the...
- A body of mass M is kept on a rough horizontal surface (friction coefficient μ). A person is trying to pull the body by applying...
- **Statement I:** It is easier to pull a heavy object than to push it on a level ground. **Statement II:** The magnitude of...
- **Statement I:** Use of ball bearings between two moving parts of a machine is a common practice. **Statement II:** Ball bearings...
- **Statement I:** Angle of repose is equal to angle of limiting friction. **Statement II:** When the body is just at the point of...
- **Statement I:** Friction is a self adjusting force. **Statement II:** Friction does not depend upon the area of the body.
- **Statement I:** On a rainy day, it is difficult to drive a car or bus at high speed. **Statement II:** The value of coefficient...
- **Statement I:** When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in the...
- **Statement I:** The value of dynamic (kinetic) friction is less than the limiting friction. **Statement II:** Once the motion...
- **Statement I:** The acceleration of a body down a rough inclined plane is greater than the acceleration due to gravity....
- A body presses a book against the front wall such that the book does not move. The force of friction between the wall and the...
- A body of mass 2 kg is moving on the ground comes to rest after some time. The coefficient of kinetic friction between the body...
- A force of 19.6 N when applied parallel to the surface just moves a body of mass 10 kg kept on a horizontal surface. If a 5 kg...
- A body of mass 10 kg slides along a rough horizontal surface. The coefficient of friction is 1/√3. Taking g = 10 m/s², the least...
- If the normal force is doubled, the coefficient of friction is
- A child weighing 25 kg slides down a rope hanging from the branch of a tall tree. If the force of friction acting against him is...
- A motor car has a width 1.1 m between wheels. Its centre of gravity is 0.62 m above the ground and the coefficient of friction...
- A stone weighing 1 kg and sliding on ice with a velocity of 2 m/s is stopped by friction in 10 sec. The force of friction...
- In the above question, if the lift is moving upwards with a uniform velocity, then the frictional resistance offered by the body...
- Which of the following statements are incorrect? (i) If there were no friction, work need to be done to move a body up an...
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