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[" 49.A particle is projected along a ho...

[" 49.A particle is projected along a horizontal field whose "],[" coefficient of friction varies as "mu=A/r^(2)," where "r" is the "],[" distance from the origin in metres and "A" is a positive "],[" constant.The initial distance of the particle is "1" m from the "],[" origin and its velocity is radially outwards.The minimum "],[" initial velocity at this point so the particle never stops is "],[[" (t) "(2E)/(K)" a."oo," d."4sqrt(gA)]],[" c."sqrt(2gA)," d."4sqrt(gA)]

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