An object of mass 80 kg is pulled on a horizontal rough ground by a force of 500 N. Find the coefficient of static friction.
[g = 10 ms\(^{-2}\)]
A
0.8
B
0.4
C
1.0
D
0.6
Verified Correct Answer: D.
Physical Principles & Numerical Solution
coefficient of friction
= \(\frac{F}{R}\)
=\(\frac{F}{mg}\)
= \(\frac{500}{80 \times 10}\)
= 0.625
Source: WAEC / JAMB / NECO Classroom Archive (Record #14143)