Question

A merry go round has a radius 4m and completes a revolution in 2 seconds. Then acceleration is

A.
Zero

B.
2π2

C.
π2

D.
4π2

Answer 1

Answer:

c....................

Answer 2

Answer:

R=4 m

And, speed=

2

2πR

=4π m/s

So, a=

R

v

2

=

4

π

2

×4

2

=4 π

2

m/s

2

Explanation:

Option d