- A uniform solid ball has a mass of 20 g and a radius of 5 cm.
It rests on a horizontal surface. A sharp force is applied to the
ball in the horizontal direction 9 cm above the surface. The force
rises linearly from 0 to a peak value of 40,000 N in
10-4 s and then decreases linearly to 0 in
another 10-4 s. (The moment of inertia for a
solid ball is 25mR2
)
- What is the velocity of the ball after the impact?
- What is the angular velocity of the ball after the impact?
- What is the velocity of the ball when it begins to roll without
sliding. (This means v=Rw).
- For how long does the ball slide on the surface given the
coefficient of kinetic friction
uk=0.5.
If the answers are going to be written please do it legible,
thanks