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CHECK YOURSELF ANSWERS
1D; in A it is zero, in B and C it is the same (5 N m) and in D it is 52âNÂ m.
2C, because more mass is away from the axis.
3C, masses of 2 kg separated by D.
4Point particle first, ring last. Since a=gsinÎ¸1+1MR2, the point particle has acceleration a = g sin Î¸, the cylinder a=23gsinÎ¸ and the ring a=12gsinÎ¸.
5The angular momentum of the planet is conserved, so mvASA=mvpSP
So, vAvr=13.
