752_Dynamics 11ed Manual

752_Dynamics 11ed Manual - ⎟ ⎟ ⎠ A x A y ⎛ ⎜ ⎜...

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Engineering Mechanics - Dynamics Chapter 21 *Problem 21-44 The bar of weight W rests along the smooth corners of an open box. At the instant shown, the box has a velocity v = v 1 k and an acceleration a = a 1 k . Determine the x , y , z components of force which the corners exert on the bar. Given: W 4lb = a 2f t = v 1 5 ft s = b 1f t = c 2f t = a 1 2 ft s 2 = Solution: Guesses A x 1lb = B x 1lb = A y 1lb = B y 1lb = B z 1lb = Given A x B x + 0 = A y B y + 0 = B z W W g a 1 = 1 2 c b a B x B y B z × 1 2 c b a
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Unformatted text preview: ⎟ ⎟ ⎠ A x A y ⎛ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎠ × + = A x A y B x B y B z ⎛ ⎜ ⎜ ⎜ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎟ ⎟ ⎟ ⎠ Find A x A y , B x , B y , B z , ( ) = A x A y ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ 2.12 − 1.06 ⎛ ⎝ ⎞ ⎠ lb = B x B y B z ⎛ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎠ 2.12 1.06 − 4.25 ⎛ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎠ lb = 750...
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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