JEE · NEET Previous Year Question
A block of mass 5 kg is moving on an inclined plane which makes an angle of with the horizontal. Friction coefficient between the block and inclined plane surface is . The force to be applied on the block so that the block will move down without acceleration is N. .
Topic: JEE PYQ
Answer: C. Full step-by-step solution below.
- A25
- B7.5
- C12.5
- D15
Correct answer: C
Solution
(c) For motion without acceleration, net force .Component of weight along incline: down .
Normal force: .
Friction force opposing downward motion:
(up).
For equilibrium along the incline, applying force F down the incline:
, so , giving .
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