What work is done when lifting a hydraulic hammer with a mass of 20 tons to a height of 120 cm?
| August 3, 2021 | education
Given: t = 20 m = 20,000 kg; S = 120cm = 1.2m
Find: A -?
This problem is solved similarly to the previous one, but you need to forget about the dimensions:
A = F * S; F = mg
А = mgS = 20,000 • 10 • 1.2 = 240,000 J = 240 kJ
Answer: A = 240 kJ
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