(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

When an athlete

throws a javelin her forearm snaps through an angle of

approximately ¼ radians in 0.20 s. The athlete’s hand moves

with approximately constant speed, the length of her forearm

is 45 cm, and the combined mass of her forearm and javelin

is 2.0 kg. Assuming that the system is well approximated by

a mass of 2.0 kg located 45 cm from the pivot, what force do

the ligaments holding the forearm to the elbow need to exert?

2. Relevant equations

3. The attempt at a solution

Im getting lost, I cant interpret the question easily. I really have no idea how to do this.

I can picture some sort of lever mechanism but other than that, im confused as to what to do with the angular displacement value and the time period value theyve given us.

cheers

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# Homework Help: Mechanics application problem

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