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8. A large number (n) of identical beads, each ofmass m and radius r are strung on a thin smooth rigidhorizontal rod of length L(L>>r) and are at rest atrandom positions. The rod is mounted between tworigid supports (see figure). If one of the beads is nowgiven a speed v, the average force experienced by eachsupport after a long time (assume all collisions areelastic) ismu(a) m2tb)2(L-nr)a) zero DEE Main 15 OnlinelL-nr |
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