A little spider monkey (let’s call her Flo) has stolen a bunch of bananas from her older brother Charley and is now running away from him with the bananas in hand. She sees salvation in a long vine and grabs the bottom, hoping to swing away.
If Flo, who has a mass of 5.3 kg, and the bananas, with a mass of .5 kg, reaches a height of 1.2 m before slowing to a stop and swinging back down, how fast was she running when she grabbed the vine?
As she swings back down, Charley (whose mass is 5.9 kg) is standing just at the bottom of the swing. He grabs her and they swing up together. What height will the two monkeys and the coveted bananas reach?
i already answered the 1st ? and i got 4.85m/sec
i need help with the 2nd ? plz
2006-12-13 15:36:48 · 1 answers · asked by fnnybunny45 1 in Science & Mathematics ➔ Physics
you're right w/ the 1st
2nd:
Total Energy = PE + KE
max PE = ((5.3+5) * 9.81 * 1.2) = 121.25 J
This should equal to ((5.3 + 5 + 5.9) * 9.81 * h), so
121.25 = 158.92 * h
so h = 0.76 m
which makes sense, since with the heavier mass, the swing will go to a lower height
2006-12-13 16:38:29 · answer #1 · answered by Math-Chem-Physics Teacher 3 · 0⤊ 0⤋