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17. The angular velocity of a rotating turntable is given in rad/s by w 2.7P. What is its angular acceleration at t 2.0s? 4.5+0.641- A)-10 rad/s D) 2.4 rad/s B)-5.0 rad/s2 E) 3.1 rad/s2 C)-5.4 rad/s2

13. Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are touching each other. The distance of centre of mass from first sphere is: A) a B) 2a C) 3a D) 0 E) None of the above
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Answer #1

the basic idea is that angular acceleration is first derivative of angular velocity.

S6 24 ヒー A-

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