Please include solutions so I can understand them better. Thank you

7. A woman whose mass is 60 kilograms is standing on a scale in an elevator that has an initial downward velocity of 4 meters per second and is accelerating upward a1 6.0 meters per second per second. What is the magnitude of the apparent weight indicated by the scale? Scale a - 6.0 -2 S. A weightless beam rests on two supports. The beam supports a B.00 m 5.00 m weight of 260 newtons. as shown. What are the magnitudes of 260 N forces al A and B? B 9. In the pulley system shown, all the pulleys are massless and frictionless and the rope is of negligible mass. Aristotle wanted to raise the 262-newion weight to a height of 3.00 meters (a) Find the magnitude of force F he needed to pull on the rope to move the weight upward with a constant velocity. (b) What was the mechanical advantage of the pulley system? G (c) How far did he have to move his end of the rope? (d) How much work did he do? (c) How much work was done on the weight? 262 N 10. The efficiency of the first machine is 20.0 percent and the efficiency of the second machine is 80.0 percent. If 32.000 joules of energy is supplied to the first machine, what is the work output 32.000 J mz-IO>3 Work mz-IODS of the second machine? out #1 #2