Question

The body of weight 500N just slides when a force of 200N acts on it .the coefficient of friction is (PLEASE TELL ME FAST)

Answer 1

weight of body = 500N
so normal force(N) = weight = 500N

it just slides when 200N force acts on it. Since on a rough surface a body just slides when it just overcomes the friction,
the friction force = 200N
⇒μN = 200
⇒μ = 200/N
⇒μ = 200/500 
⇒μ = 0.4