A block of mass m is pulled on a rough horizontal surface which has a friction coefficient µ A horizontal force F is applied which is capable of moving the body uniformly with speed v. Find the work done on the block in time t by
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
zero zero
–µmgvt µmgvt
Sol.
f = µmg = F
Displacement = vt
W mg = mg × vt cos90º = 0
W N = N × vt cos90º = 0
W f = –µmgvt
W F = Fvt = µmgvt.
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