To solve this problem it is necessary to apply the concepts related to Torque as a function of Force and distance. Basically the torque is located in the forearm and would be determined by the effective perpendicular lever arm and force, that is

Where,
F = Force
r = Distance
Replacing,


The moment of inertia of the boxer's forearm can be calculated from the relation between torque and moment of inertia and angular acceleration

I = Moment of inertia
= Angular acceleration
Replacing with our values we have that



Therefore the value of moment of inertia is 
density equals mass over volume for example: d=m/v, so 45.837g/1703.3414cm =
p = 0.02691 g/cm3
=11.943cm
You would have to do some conversion to get the 11.943cm
Answer:
q = square root (4KsL³/k)
The force of extension of the spring is equal to the force of repulsion between the two like charges. Two like charges(positive or negative) would always repel each other and two unlike charges would always attract each other. This electric force between the charges is what is responsible for the stretching of the spring. The electric force causes the spring to increase in length from L to 2L. Equating these forces, that is the electric force between the charges and the elastic force of the spring and rearranging the variables gives the expression to obtain q.
Explanation:
See the attachment below for full solution.
A force is a push or pull upon an object resulting from the object's interaction with another object.
In a direct current, the electric charge, or current, only flows in one direction. In an alternating current, the electric charge changes periodically.