Physics Two Dimensional Motion Question 250

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

[CPMT 1974; AFMC 2003]

Options:

A) Doubled B)Quadrupled C) Halved D)Unchanged

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Answer:

Correct Answer: B

Solution:

$ F=\frac{mv^{2}}{r} $

Therefore $ F\propto v^{2} $ . If v becomes double then F (tendency to overturn) will become four times.