Question

A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is

(A) doubled. 

(B) quadrupled. 

(C) halved. 

(D) unchanged.

Answer 1

Answer is (B) quadrupled.

F = \(\frac{mv^2}{r}\)

∴ F ∝ v² . If v becomes double, then F (tendency to overturn) will become four times.