hw9_sol

hw9_sol - Scum Mar ’ng 12.66 A 0.5-kg block B slides...

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Unformatted text preview: Scum Mar ’ng 12.66 A 0.5-kg block B slides without friction inside a slot cut in 0A which rotates in a vertical plane at a constant rate, 0 = 2 rad/s. At instant when 9 = 30°, r = 0.6 m and the force exerted on the block by arm is zero. Determine, at this instant, (a) the relative velocity of the b10012? With respect to the 31m, (b) the relative acceleration of the block with resped‘f to the arm. » 12.72 Disk A rotates in a horizontal planeahout a vertical axis at the WM Slider B has a mass of 230 g and moves in a fictionless slot cut in the disk. The slider is attached to a spring of constant k = 60 N/m, which is undeformed when r = 0. Knowing that at a given instant the acceleration of the slider relative to the disk is i‘ = -12 111/52 and that the horizontal force exerted on the slider by the disk is 9 N, determine at that in- stant (a) the distance r, (b) the radial component of the velocity of the slider. ‘ SCMQ the Shim? is “MAS {matched 05 “or ‘v , ' 4‘ f UL! fl?" 6’31“; Qf C3“ fgdi £1; v ’43, fir CAL L grid, Cam) fits vaiéfl; cg 5,07%} r {2" C51) : 506%)“ Fig. P12.72 é tit/(Me f {or Y70 56 ,3.“ New} 74ml? 6” f Y 70 ...
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hw9_sol - Scum Mar ’ng 12.66 A 0.5-kg block B slides...

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