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bigsaucy

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2.) In the mens hammer throw field event, athletes compete to throw a hammer as far as possible. A Hammer consists of a ball of mass 7.257kg attached to a cable of length 1.215 meters. Atheletes typicall spin the hammer 4 times before releasing. The world record for a hammer throw is 86.74 meters.

a) Assuming that the hammer is thrown at an angle of 45 degrees to the horizontal and neglection air resistance, calculate the s peed of the ball when released for the world record throw. My Answer: 58.31 m/s

b) What is the tension in the cable just before release? My Answer: 20307.98 N toward the athlete

c) ASsuming the athlete has a mass of 100kg, what is the minimum coefficient of static friction needed by his shoes to keep him from slipping as he releases the hammer? My Answer: 20.72 (not sure what the units are meant to be)

d) Assuming the athelete completes 4 revolutions before releasing the hammer, what is the total distance the ball moves during its 4 revolutions? My Answer: 30.54 meters

e) What is the final angular velocity of the hammer just before it is released? My Answer: 12 rad/s

f) Assuming constant angular acceleration and assuming all the mass of the hammer is located in the ball, what torque did the athlete supply to the ball? My Answer: I wasn't sure on how to do this problem.