Question

11. When a body slides down from rest along a smooth inclined plane
making an angle of 45 degree with the horizontal, it takes time t. when the
same body slides down from rest along a rough inclined plane making the
same angle and through the same distance. it takes time pt, where p is
some number greater than 1 the coefficient of friction between the body
and the rough plane is​

Answer 1

picture: 1⬆️⬆️. picture: 2 ⬆️⬆️

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