1.

A conveyer belt is moving at a constant speed of 2 ms^(-1) A box is gently dropped on it. The coefficient of friction between them is mu = 0.5. The distance that the box will move relative to belt before coming to rest on it, taking g= 10 ms^(-2), is

Answer»

`0.4 m`
1.2 m
0.6m
zero

Solution :Forceof Friction` f^(-)mu MG `
` thereforea = (f)/( m )= (mu mg)/( m)= mu g= 0.5xx 10= 5 MS^(-2)`
USING`v^2- u^2= 2aS `
` 0^2 -2^2 =2 (-5) xx SimpliesS= 0.4m`


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