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Q.

If the unit of velocity is run, the unit of time is second and unit of force is strength in a hypothetical system of unit. In this system of unit, the unit of mass is (strength)x(second)y(run)z. Find the value of yx

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a

3

b

5

c

6

d

1

answer is D.

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Detailed Solution

F = ma⇒  m = Fa= ForceChange in velocityTime= Force ×TimeChange in velocity= (strength)(s)(run)-1Thus, x = 1, y = 1 and z = -1∴ yx = 1
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