Tangential and Normal forces

Hi Can anyone help me understand how to go about solving this problem i believe it involves using tangential normal equations but cant get my head around it. Thanks :smile:

the hammer throw athlete is initially at rest and starts revolving about his/her body axis with an angular acceleration 1.5 rad·s-2 until he/she eventually releases the ball of mass m = 7.67 kg at the end of 5 revolutions. Determine the centripetal force (pull) that the athelete applies at the instant of release if the wire has length R = 1.09 m. Ignore gravitational forces.

Reply 1

Joinedup

You'd be able to calculate the centripetal force if you knew the angular velocity after 5 complete revolutions at a constant angular acceleration.

so it'd help if you knew or were able to derive something like the SUVAT equations... but for circular rather than straight line movements.

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