Question

The upper half of an inclined plane with inclination Φ is
perfectly smooth while the lower half is rough. A body
starting from rest at the top will again come to rest at the
bottom if the coefficient of friction for the lower half is given
by
(a) 2 cos Φ (b) 2 sin Φ
(c) tan Φ (d) 2 tan Φ

Answer 1

Answer:

(a) 2 cos Φ (b) 2 sin Φ

(c) tan Φ (d) 2 tan Φ

Explanation:

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