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A block slides from an inclination of 45°.If it takes time twice

A block slides from an inclination of 45°.If it takes time twice with friction than to that without friction, then coefficient of friction for surface is given by

Options

(a) 1
(b) 0.75
(c) 0.5
(d) 0.25

Correct Answer:

0.75

Explanation:

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