# Quiz 1 - Quiz 1/A&B Frictionless pulley g = 10m/s2 Author...

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Author: Sachin Goyal Frictionless contact Rough contact g = 10m/s 2 Frictionless pulley m 1 m 2 Copyright © 2009 Cornell University. All rights reserved. 1 1 = 60 2 = 30

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Author: Sachin Goyal Free Body Diagrams T T F N 1 1 2 2 Copyright © 2009 Cornell University. All rights reserved. 2 m 1 g m 2 g N 2 1 2 We need to find the unknown F .
Author: Sachin Goyal Free Body Diagrams with Resolved Forces T T F N 1 m 1 g cos ( 1 ) m 2 g sin ( 2 ) m 2 g cos ( 2 ) Copyright © 2009 Cornell University. All rights reserved. 3 m 1 g sin ( 1 ) N 2 The Needed Equations of Static Equilibrium to solve for F : T - m 1 g sin ( 1 ) = 0 T + F – m 2 g sin ( 2 ) = 0 F = m 2 g sin ( 2 ) – m 1 g sin ( 1 ) i.e.

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1. Quiz 1/A: m 1 = 3 kg and m 2 = 3 kg gives F = 0 N. Given for both quizzes: g = 10m/s 2 , sin( 1 ) = 3/2 and sin( 2 ) = 1/2 Copyright © 2009 Cornell University. All rights reserved.
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## This note was uploaded on 09/15/2009 for the course ENGRD 2020 taught by Professor Zehnder during the Fall '06 term at Cornell.

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Quiz 1 - Quiz 1/A&B Frictionless pulley g = 10m/s2 Author...

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