The triceps muscle in the back of the upper arm extends the forearm. This muscle
ID: 1338884 • Letter: T
Question
The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of 2.00×103 N with an effective perpendicular lever arm of 3.00 cm, producing an angular acceleration of the forearm of 120 rad/s2. What is the moment of inertia of the boxer’s forearm?
The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of 2.00×103 N with an effective perpendicular lever arm of 3.00 cm, producing an angular acceleration of the forearm of 120 rad/s2. What is the moment of inertia of the boxer’s forearm?
Explanation / Answer
Use equation,
Torque = F*r*sinq= I*alpa
I= (F*r*sinq)/alpa = (2.00*10^3*0.03*sin90)/120 = 0.5kg*m2
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