4: Question 2 - 10.0 pts possible Which statement about the concept of
work, as defined by physics, is false?
O 1. No work is done by a force if the object moves
in a direction perpendicular to the direction
along which the force acts.
O 2. No work is done by a force on an object that
moves with constant velocity, where the ve-
locity does not have a component along the
direction of the force.
O 3. A given force acting on an object may or may
not be doing work.
O 4. No work is done by a force if the object on
which the force is acting does not move.
O 5. All of the statements are true; none is false.

Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r