Physics

Problem

8. A child has a toy tied to the end of a string and whirls the toy at constant speed in a horizontal circular path of radius

R

. The toy completes each revolution of its motion in a time period

T

. What is the magnitude of the acceleration of the toy? (A) Zero (B)

\frac{4 \pi^{2} R}{T^{2}}

(C)

\frac{\pi R}{T^{2}}

(D)

g

(A) Zero (B)

\frac{4 \pi^{2} R}{T^{2}}

(C)

\frac{\pi R}{T^{2}}

(D)

g