Imagine a atwood's machine with a "massive" string without weights attached. the experiments here used a light string, whose mass (compared to that of the weights) you ignored. suppose that you moved the string so that unequal lengths were on each side of the pulley. what type of motion will you see when the string is released?

The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm