Question

how much will be the co efficient of friction for moving a body of mass 80 kg by a force of 40 kg on a horizontal surface ?
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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

let a be the acceleration of the box.

the equation of motion of the box, ma= F-f ( as friction force always opposite to applied force)

or 40a=80-60

or a=20/40=0.5m/s

2

Very pleasure to help you