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--? Q.2
Shouldthere be any matterat thecenter of gravityof an object? The torque exerted by a force about some axis dependson the choice of axis. Howcan the condition,
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Q.3What is the path ofa 'particle in a rigid object rotating about a fixed axis? "
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mass'? Ifso, whichones?
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~~-th~-'olre?tion ofthe angular' velocityofa rigi4objectrql~tingabo1,Jt~fixe4~i~?Wh!iU$Jhe velocityof a particle-in a rigidobjectrotatingaboutci f1Xed.~P '~: ", '.' .. .
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'~?~~t~'''~' t¥-i7s'qb~j¢ctro~g about afixedaxishas-nonzercangulaevelocityand angularaeeleration. R~q!~A ~t:;~' ;.~!~':as Illifrom theaXiwe,61ationaspt>lticlJ>B.W'W1/iS the ratio oftho Jollo.w!ng
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,i . Qi9:"; H(:)theangUlarvelocitiesofthehandsofa·wallclockporntiotothewall0foutofthewaU?At,~-jw;wt . -tH&'elock is unplugged, do theangular.accelerationsofthe handspoint intothewallor outefthe wan? .0,10 A,.®:r is movingforwardandslowingdOWIl. Isthe direction ofteangular velocity of thewheelstoward :_nO.. ;-tii~iinvee~leftot: rlght?What is the direction of the angularacceleration of the wheels?, . .-:: . . -:
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