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On his last throw of the Atlanta Olympics, Lance Deal launched the hammer 81.12m, good enough for a silver medal. The hammer is thrown by rotating the body in a circle, building up rotational speed until releasing it and letting the rotational velocity change to translational velocity.
- a.
- The hammer is affixed on the end of a 1.21m long cord and along with the arms makes for a radius of rotation of 2.00 meters. What was the rotational velocity of Lance Deal in revolutions per second if he launched the hammer at a 35 degree angle above the horizontal, one meter above the ground (ignoring air resistance)?
- b.
- The ball of the hammer weighs 7.26kg. At the roational speed found in part a., what centripital force was Lance exerting to hold onto the hammer?
- c.
- Convert the centripital force to its equivilant in mass if you were holding it in you hand.
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