11. A motor is used to raise a hanging mass of 3 kg to a height, h, at a constant speed of 0.05 m/s. The battery (not shown) which provides energy to the motor originally stores 4 J of energy, all of which can be used to lift the mass. 11a. What is the power developed in the motor? 11b. To what maximum height, h, can the motor lift the mass using its stored energy in the battery