A uniform sphericall shell of mass=4.5kg and radius= 8ck can rotate about a vertical axis on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia, I = 3.0 * 10^2 and radius = 5.0cm and is attached to a small object of mass = 0.60kg.(adsbygoogle = window.adsbygoogle || []).push({});

Using Newtonian dynamics and rotational motion:

(a) Find the acceleration of the block

(b) the angular acceleration of the shell and pulley

(c) the tensions in the cord.

(d) Let the small object start from rest at t=0. Use energy considerations to find the speed of the object when it has fallen 82cm.

Formulas I calculated

ma= mg-T

alpha= acceleration/radius

torque= I0*alpha

torque= Isp * alphasp

alphasp=acceleration/radius

torque/radius= Tension - Tension^1

Tension^1= tension^1/r

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# Acceleration and Inertia

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