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the ratio of magnitude of work done in moving slowly a block of mass m on a rough inclined surface of inclination 45 degree from bottom to top and from top to bottom is 5. the coefficient of friction between the block and surface is (a)1/2 (b)2/3 (c)2/5 (d)4/5

the ratio of magnitude of work done in moving slowly a block of mass m on a rough inclined surface of inclination 45 degree from bottom to top and from top to bottom is 5. the coefficient of friction between the block and surface is


(a)1/2


(b)2/3


(c)2/5


(d)4/5

Grade:12th Pass

2 Answers

Chetan Mandayam Nayakar
312 Points
8 years ago

let answer=k

(sin45 +kcos45)=5|kcos45-sin45|

RAMESH BHARATHAPU
33 Points
8 years ago

C)2/5

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