Multiple Choice QuestionsTwo particles A and B are moving as shown in the figure.
Their total angular momentum about the point O is
9.8 kg m2 / s
zero
52.7 kg m2 / s
37.9 kg m2 / s
A.
9.8 kg m2 / s
Total angular momentum about O is given as,
L = L1 + L2 = m1v1r1 + m2v2r2
= − 6.5 × 2.2 × 1.5 + 3.1 × 3.6 × 2.8
= − 21.45 + 31.248 = 9.8 kg m2 / s
A circular disc rolls on a horizontal floor without slipping and the centre of the disc moves with a uniform velocity v. Which of the following values of the velocity at a point on the rim of the disc can have ?
v
− v
2v
Zero
Switch
