Brick lifting work

How many bricks do they have to lift on a 1.2 m high flatbed if I want to do the work 5.88kj and one brick weighs 5 kg?

Final Answer:

n =  100

Step-by-step explanation:

h=1.2 m W=5.88 1000=5880 J m=5 kg g=9.81 m/s2  W1=m h g=5 1.2 9.81=502943=585043=58.86 J  n=W/W1=5880/58.86=100



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