A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5 ms-1. find the coefficient of friction between the road and the tyres.
-
A.
25.00 -
B.
2.50 -
C.
0.50 -
D.
0.25
Correct Answer: Option D
Explanation
F = (mv)2/r = (100 x 5)2 = 250N
R = mg = 100 x 10 – 1000N
coefficient of friction,
µ = (F)/R = (250)/1000 = 0.25