Question

In 3 seconds,an object moving around a circle sweeps out an angle of 9 radians.If the radius of the circle is 0.5 meter,the centripetal acceleration of the object is

Answer 1

Answer:

Explanation:

Answer : 4.5m/s2

4.5

m/s2

If the object sweeps out 9 rad in 3s,its angular velocity is 3 rad/s.Since the radius is 0.5m,the centripetal acceleration is given by

ac=ω2R=(9)(0.5)=4.5m/s2