A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other mov
ements. If the linear velocity of the ball relative to the elbow joint is 22.3 22.3 m/s at a distance of 0.480 0.480 m from the joint and the moment of inertia of the forearm is 0.550 0.550 kg·m2, what is the rotational kinetic energy of the forearm?
2 answers:
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Answer:
Explanation:
The magnitude of the net force exerted on q is known, we have the values and positions for and q. So, making use of coulomb's law, we can calculate the magnitude of the force exerted by
on q. Then we can know the magnitude of the force exerted by
about q, finally this will allow us to know the magnitude of
exerts a force on q in +y direction, and
exerts a force on q in -y direction.
The net force on q is:
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