No. 7 S displEetnent. vo. initial vebaty. a • •
Where m = mass, a
[Ans. : (i) and (ii) is dimensionally valid and and Ze
If the velocity of light, acceleration due to gravity ze
chosen as the fundamental units, find the unit of mass,
Given that velocity of light, c = 3 X 108m s-l, g = 10ms-1
atmospheric pressure, P = 105N/m2
[Ans. unit of mass = 8.1 x 1033kg, of
and unit of =
+ V is a dimensionally valid equation. Obtan
V = at +
is velocity, t is