Answer the following briefly. `(` Answer should not be of more than one or two line `)`
Channel: Doubtnut
Date: 2020-04-12

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 ?