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Actually Welcome to the Concept of the Work, energy and power.
Potential energy = m*g*h, here g = 9.8 m/s^2 (universal value)
hence, h = P/m*g
==> h = 74/ 5*9.8
===> h = 74/49
==> h = 1.51 meters
hence the height is 1.51 m
