Physics > 2015 > 8
JAMB UTME
The efficiency of a machine is 70%. Calculate the work done using this machine to raise a load 10kg through a vertical height of 2.0m.
[g = 10ms-2]
[g = 10ms-2]
A.
2000J
B.
3000J
C.
2850J
D.
1000J
Answer: C
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