In a moveable pulley, the output force is equal to the input force. This means that if you exert an input force of 50 N, the output force will also be 50 N.

This is because a moveable pulley changes the direction of the applied force without changing its magnitude. The pulley acts as a lever, and the input force is applied to one end of the lever while the output force is applied to the other end. The distance between the two ends of the lever is the same, so the input and output forces are equal.