A block of mass 2 kg rests on a plane inclined at 30° with the horizontal. The coefficient of friction between the block and the surface is 0.7. What will be the frictional force acting on the block?
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frictional force at a given angle = umgcos a
u= 0.7
g =10 ( approx)
m=2 kg
so frictional force= 0.7*10*2* cos 30
after simplification we get
7*1.732=12.1243
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