A force of 20 N applied parallel to the surface of a horizontal table, is just sufficient to make a block of mass 4kg move on the table. Calculate the coefficient of friction between the block and the table. (g = 10ms2)
A
0.05
B
0.20
C
0.50
D
0.80
E
2.00
Verified Correct Answer: C.
Physical Principles & Numerical Solution
μ= F/mg = 20/40 = 0.5
Source: Myschool Past Questions Archive (Record #24251)