COMMUNITY COLLEGE OF BALTIMORE COUNTY
Catonsville Campus
Division of Mathematics, Science, and Engineering
Department of Physics, Astronomy, Earth Science, and Geography

Take Home Quiz

PHYS 101 - Sopka

All-or-nothing scoring. If all answers are correct and I understand your method, you will receive 10 quiz points!! (5 regular quiz points and 5 extra credit quiz points). Your presentation MUST be neat and readable.

Tarzan stands on a limb that is 20 m above the ground. He grabs a vine that is 35 m long and swings in a circular path passing within 3.0 m of the ground and eventually lands on a limb of another tree that is 15 m above the ground. Tarzan has a mass of 91.0 kg.

A. Through what angle does the vine rotate during this event?

B. What is the total amount of energy lost to air friction during Tarzan's swing?

C. Assuming that all of this energy is lost to a constant frictional force, determine the magnitude of this force.

D. What was Tarzan's speed at the bottom of the swing?

E. Tarzan decides to use the same vine to support his supply of bananas. Based on his observation that the vine didn't break during his swing, what is the maximum mass of bananas that the vine could support (without motion)?

F. Tarzan attaches his supply of bananas to the end of the vine in order to hoist them up into the tree. However, a hungry 240 kg gorilla coveting the bananas appears in the bushes. Tarzan scrambles up the tree, grabs the vine and hoists the bananas (at constant velocity) to a height of 10 meters above the ground in 3.0 seconds. How much power did Tarzan supply while hoisting the bananas?

G. How much does the gorilla weigh?