A boy pushes a 500kg box along a floor with a force of 2000N. If...

JAMB 2019

A boy pushes a 500kg box along a floor with a force of 2000N. If the velocity of the box is uniform, the co-efficient of friction between the box and the floor is

A. 1
A. 0.8
C. 0.65
D. 0.4

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Correct Answer: Option D

Explanation

m = 500kg, W = mg = 500 × 10 = 5000N
F = 2000N

Force at constant velocity

weight

2000

5000

0.4

There is an explanation video available below.

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A boy pushes a 500kg box along a floor with a force of 2000N. If...

Correct Answer: Option D

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