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JAMB Physics 2019 Paper
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© africaexams.com
Question : 68
Total: 100
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
1
0.8
0.65
0.4
Validate
Solution:
m = 500kg, W = mg = 500 × 10 = 5000N
F = 2000N
μ
=
Force at constant velocity
weight
=
2000
5000
=
0.4
© africaexams.com
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