A block of mass 4 kg is placed on a rough horizontal plane. A time dependent force F =…
Physics · JEE Main · NTA Exams — Laws of Motion
A block of mass 4 kg is placed on a rough horizontal plane. A time dependent force F = kt2 acts on the block, where k = 2N/s2 . Coefficient of friction μ = 0.8 . Force of friction between block and the plane at t = 2s is:
- 8 N
- 4 N
- 2 N
- 32 N
Answer
(A) 8 N
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