please explain

Asked by  | 5th Oct, 2008, 01:47: PM

Expert Answer:

the normal reaction balances the weight of the body i.e it is equal to mg, when the surface is inclined the the weight of the body which is perpenicular to the surface is mgcos θ where θ is the anlge of inclined hence it is not equal to the weight of the body. 

Answered by  | 5th Oct, 2008, 11:31: PM

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