Calculate the magnitude of the force required to just move a 20kg object along a...
PHYSICS
JAMB 1994
Calculate the magnitude of the force required to just move a 20kg object along a horizontal surface if the coefficient of friction is 0.2. [g = 10ms-2]
- A. 400.0N
- B. 40.0N
- C. 4.0N
- D. 0.4N
Correct Answer: B. 40.0N
Explanation
F = \(\mu\)mg
= 0.2 x 20 x 10
= 40N
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