posted by jessica .
A man is standing on a platform that is connected to a pulley arrangement, as the drawing shows. By pulling upward on the rope with a force the man can raise the platform and himself. The total mass of the man plus the platform is 94.7 kg. What pulling force should the man apply to create an upward acceleration of 1.20 m/s2?
my guess would be using F=m.a and inputing the values you have in. f = 94.7kg / 1.20m/s2 = 78.92n (2dp) is that what you got?