posted by lissa on .
A monkey is sitting on a wood plate attached to a rope whose other end is passed over a tree branch, as shown in the figure. The monkey holds the rope and tries to pull it down. The combined mass of the monkey and the wood plate is 117 kg.
a) What is the minimum force the monkey has to apply to lift off the ground?
b) What applied force is needed to move the monkey with an upward acceleration of 2.71 m/s2?
c) Now assume there is a second monkey standing on the ground and pulling down the rope by himself. What is the minimum force this second monkey has to apply to lift the first monkey on the wood plate off the ground?
d) And what applied force is necessary so that the second monkey on the ground can move the first monkey on the wood plate with an upward acceleration of 2.71 m/s2?
I NEED ONLY ANSWERS OF ESCH QUESTÝONS.. ÝF ANYONE SOLVE THESE PROBLEM. I WÝSH TO SAY LÝKE A) B) C)... THANKS