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A force, 10N, drags a mass 10kg on a horizontal table wit...

A force, 10N, drags a mass 10kg on a horizontal table with an acceleration of 0.2ms. If the acceleration due to gravity is 10ms-1, the coefficient of friction between the moving mass and the table is

A.

0.02

B.

0.08

C.

0.20

D.

0.80

Correct answer is B

μmg = ma

μmg = F - ma

μ x 10 x 10 = 10 - (10 x 0.2)

100 μ =10 - 2

dividing both sides by 100

μ = 8 / 100

μ = 0.08