Physics help!?

Posted on 2015-11-24 06:43:00 in Physics by DONALD

n the hammer throw, an athlete spins a heavy mass in a circle at the end of a cable before releasing it for distance as shown in (Figure 1) . For male athletes, the "hammer" is a mass of 7.3 kg at the end of a 1.2 m cable, which is typically a 3.0-mm-diameter steel cable. A world-class thrower can get the hammer up to a speed of 29 m/s. If an athlete swings the mass in a horizontal circle centered on the handle he uses to hold the cable
Part A
What is the tension in the cable? Neglect the gravity.
Part B
How much does the cable stretch? Young modulus for steel is 20×1010N/m2.

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