Answer to Question #2991 in Mechanics | Relativity for Abhyuday
A spherical body of mass m and radius r is allowed to fall in a medium of viscosity n.The time in which the velocity of the body increases from zero to 0.65 times the terminal velocity v is called the time constant t.The dimensions of t are (i)m*r(r raise to power 4) by 6*pie*n (ii)6*pie*m*r*n by g(g raise to power 2) whole under the root (iii)m by 6*pie*n*r*v (iv)none of these
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