Bob the block is placed next to the cylindrical glass wall of an amusement park, the cylinder then begins spinning at constant angular speed and the bob remains stuck the wall even the floor drops away , the free body diagram of all the forces acting on the bob like?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.