Question

a body is projected up a up 45 degree rough incline .if the coefficient of friction is 0.5,then the retardation of the block is

Answer 1

Please find below the answer.

Answer 2

Net retarding force= mgsin 45 + mgcos 45

(mgh=potential energy)

Sin = (height/hypotenuse),

Cos= (base/hypotenuse)

=》 mg(2/2^(1/2)) = mg2^(1/2)

=》 mg2^(1/2) = 0.5

=》 mg= 1/(2×2^(1/2))

Retardation is the force with which acceleration of a body is reduced.