IC2.1-twopulleys-2 - 1 1 2 1 1 2 2 Equation of motion for...

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Determine the vertical acceleration of the 60lb block for each of the two cases. Neglect friction and the mass of the pulleys. 3/24 Do system (a) first. You can draw the FBD of the pulley too if it helps. ma y T T =2T ma 1y Now draw the FBD and MAD diagrams for system (b)- 60 lb block: ma 2y Do out the equation of motion +y Equation of motion FBD and MAD for 40 lb block:
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Unformatted text preview: 1 1 2 1 1 2 2 Equation of motion for 40 lb block: a 2y How do you relate a 1y and a 2y ? y 1 y 2 L= 2y 1 +y 2 + constants 1 2 2 y y -= +y +y Look at how we set up our axes – when 1 goes up +y for that block), 2 goes down (+y for that block since I did a new system). a 2y (2a 1 ) 1 2 equations, 2 unknowns...
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This note was uploaded on 01/22/2011 for the course ME 212 taught by Professor Staff during the Spring '05 term at Cal Poly.

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