# first convert revolutions per second to radians per second by multiplying by 2pi (2). -?

The angular acceleration is radius*(ang.Velocity)^2.

An athlete whirls an 8.62 kg hammer tied to the end of a 1.3 m chain in a simple horizontal circle where you should ignore any vertical deviations. The hammer moves at the rate of 1.6 rev/s.

What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain. Answer in units of m/s^2.

What is the tension in the chain? Answer in units of N.

### 1 Answer

Relevance

- WhomeLv 72 months agoFavorite Answer
a = ω²R

a = (1.6 rev/s(2π rad/rev)²(1.3)

a = 131.3841...

a = 130 m/s

F = mω²RF = 8.62(1.6 rev/s(2π rad/rev)²(1.3)F = 1,132.531...

F = 1100 N

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