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PhysicsNLMFrictionEasy2 minQB
PhysicsEasynumerical

A body of weight64 Nis pushed with just enough force to start it moving across a horizontal floor and the same force continues to act afterwards. If the coefficients of static and dynamic friction are0.6and0.4respectively, the acceleration of the body will be (Acceleration due to gravity =g=10 m s-2)

Answer:
2.00
Solution:

Weight of the body = 64 N 
so the mass of the body m=6.4 kg, μ k =0.4


Net acceleration = Applied force -Kinetic friction Mass of the body = μ s mg− μ k mg m =( μ s − μ k )g=(0.6−0.4)g=0.2 g =2 m s-2

Stream:JEESubject:PhysicsTopic:NLMSubtopic:Friction
⏱ 2mℹ️ Source: QB

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