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ory Bookmarks People Window Help Chegg.com ibiscms/modlibis/view.php?id 3390905 Print Calculator Periodic Table Question 5 of 10 Sapling Learning A stick is resting on a concrete step with 2/9 of its length hanging over the edge. A single ladybug lands on the end of the stick hanging over the edge, and the stick begins to tip, A moment later, a second, identical ladybug lands on the other end 67.300 o momentarily to rest 67.3 from the horizontal. If the magnitude of the angular acceleration of the stick figure not to scale rad/ s e Previous 2 Check Answer Next 4 Ext about us careers l partners privacy policy terms of use l contact us help

Explanation / Answer

length hanging over the edge = 2(13.9)/9 = 3.09 cm

Net torqu about the resting point,

= (( 0.139 - 0.0309) x 3.26m x g) + ((0.139/2 - 0.0309) x m x g) - (0.0309 x 3.26 x m g)

= 0.3524mg + 0.0386mg - 0.10mg

= 0.29mg
and Istick = Icm + m r^2

= m (0.139^2)/12 + (m x (0.139/2 - 0.0309)^2)

= 0.0031m

I = 0.0031m + (3.26m x 0.0309^2) + (3.26m x (0.139 - 0.0309)^2)

= 0.0443m

and net torque = I alpha

alpha = 0.29mg / 0.0443m = 6.55 x 9.8

= 61.14 rad/s^2

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