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Answer the following briefly. `(` Answer should not be of more than one or two line `)` `(i)` Can friction coeffiecient be greater than unity ? `(ii)` Why is friction force Nonconservation force ? `(iii)` Can frictio do positive work ? `(iv)` Is earth an inertial frace ? `(v)` Greater force is required to make the body move than to keep it moving, hence we can say that static friction is always greater than kinetic friction. Comment on it. `(vi)` Lesser force is required to pull a lawn than to push it. Why ? |
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Answer» Correct Answer - `(i)` yes `(ii)` depend supon with `(iii)` yes `(iv)` no `(v)` limiting friction needs to be overcome to make body move `(vi) N ` is larger `(i)` yes `(ii)` depends upon path `(iii)` yes `(iv)` no `(v)` limiting friction needs to be overcome to make body move `(vi)` tension increases `(vii) N` is larger |
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