Suppose that she pushes on the sphere tangent to its surface with a steady force of f = 40 n and that the pressured water provides a frictionless support. how long will it take her to rotate the sphere one time, starting from rest?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.