a baseball is a solid sphere of radius 0.0372 m and mass 0.150 kg. a pitcher exerts a force tangent to the edge of the ball and causes an angular acceleration of 2380 rad/s^2.

Question

how much force did he exert?

Answer 1

Torque is equal force times perpendicular distance and also the rotational inertia time the angular acceleration so: τ = F × R = Iα; I for solid sphere = 2/5mR² so F x R = 2/5 mR²α dividing by R

F = 2/5 mRα = 2/5 x 0.15 x 0.0372 x 2380 = 5.31 N

Answer 2

Torque = FR=I alpha

I = 2/5 MR^2

find F.