Physics
posted by Anna .
An athlete twirls a 1 kg hammer tied to the end of a 1.3 m rope in a horizontal circle the hammer moves at the rate of 1.0 rev/sec.
(a)what is the centripetal acceleration of the hammer?
(b) what is the tension in the rope?

(a) R * w^2
(b) M*R*w^2
where w = 2 pi radians/s
M = 1.0 kg
R = 1.3 m
The answer will be in Newtons.
You should be familiar with these formulas.