om Mastering Physics HW 4 Ch 7/8 Google Chrome Secure l https//session emView? o

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om Mastering Physics HW 4 Ch 7/8 Google Chrome Secure l https//session emView? offset nmentProblemID 75530242. masteringphysics.com/myct/it next&assig; Physics 105 Spring 2017 /LeClair Signed in as D Problem 7.61 previous 16 of 11 I next Problem 7.61 Part A A uniform chain of inertia m and length lis lying on How fast is it moving when the last bit of itslps off the table? (lgnore friction) a slippery table. When one quarter of its length Express your answer in terms of some or all of the variables m,l, and the acceleration due to hangs over the edge, the chain begins to slip off gravity g Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining The correct answer does not depend on mgl Proade Feedback Contin

Explanation / Answer

Here

let the speed of chain is v

Using conservation of energy

decrease in potential energy = kinetic energy

0.5 * m * v^2 = (- m/4 * g * l/8) - (-m * g * l/2)

solving for v

v = 1/4 * sqrt(15 * g * l)

the speed of chain at this moment is 1/4 * sqrt(15 * g * l)

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