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
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Correct Answer: Option D
Explanation:
m = 500kg, W = mg = 500 × 10 = 5000N
F = 2000N
μ
Â
=
Force at constant velocity
weight
=
2000
5000
=
0.4
m = 500kg, W = mg = 500 × 10 = 5000N
F = 2000N
μ
Â
=
Force at constant velocity
weight
=
2000
5000
=
0.4