EXAM4 Key

# EXAM4 Key - PHYS 121(FAD8 EXAM 4 50 pts maximum NAME(print...

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Unformatted text preview: PHYS 121 (FAD8) EXAM 4 50 pts maximum NAME (print clearly): Discussion Section #: You can bring a 3x5 inch index card. Only non-programmable and non-graphing calculator is allowed. You must show all work, not just the answers. A correct answer alone will receive zero points. Q1. A unifonn beam oflength 1.0 m and mass 10 kg is attached to a wall by a cable. The beam is free to pivot at the point where it is attacqed to the wall. What is the tension force in the cable? (7 pts) ~ ~1D b Ih dotk erlA,)ibrIWY) 2l == cbe ~ kft "J 1-k kif) 45-tk i~rL filtt > ~->-> tPfJ if~ :::- FJ (0,5/71) ~ .~ II == Lf9-I- LT ::::: ; .~ v u 01> I \J "[T =- T. (/m)-5~-I}I O,fl'1)+T' (I'").;n),' = _ Jdio,5/n) ::; ~1(q;J :=; T - (1m) 1'-/7 (}Jj ~;/J J 1 .=: fJ AI 17 ~ Q2. A circular hoop of radius R is placed at a height of h on a slope with angle8. The hoop is released and rolls, without slipping, to the bottom. Beginning with the energy principle, from what height should a solid sphere of the same radius R be released on the same slope in order to equal the hoop's speed at the bottom?...
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## This note was uploaded on 08/28/2011 for the course PHYS 121 taught by Professor Angerson during the Spring '07 term at UMBC.

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EXAM4 Key - PHYS 121(FAD8 EXAM 4 50 pts maximum NAME(print...

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