92_Problem CHAPTER 10

92_Problem CHAPTER 10 - PROBLEM 10.81 Spring AB of constant...

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PROBLEM 10.81 Spring AB of constant 10 lb/in. is attached to two identical drums as shown. Knowing that the spring is unstretched when 0, θ = determine ( a ) the range of values of the weight W of the block for which a position of equilibrium exists, ( b ) the range of values of for which the equilibrium is stable. SOLUTION Have block 2 1 2 SP y Vk x W =− where 2 sin , 6 in. SP A A xr r == and block , 8 in. yrr Then () 2 1 2s i n 2 A r W r 22 i n A kr Wr and 2 s i n c o s A dV kr Wr d θθ 2 i n 2 A kr Wr 2 2 2 4c o s 2 A dV kr d = (1)
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This note was uploaded on 07/11/2011 for the course EGM 2511 taught by Professor Jenkins during the Spring '08 term at University of Florida.

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