.A crane lifts a 75kg mass a height of 8 m. Calculate the gravitational potential energy gained by the mass (g = 9.8 N/kg).
PE=mgh=75⋅9.8⋅8=5880 (J)PE=mgh=75\cdot9.8\cdot8=5880\ (J)PE=mgh=75⋅9.8⋅8=5880 (J) . Answer
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