Work Energy And Power Question 187
Question: The average power required to lift a 100 kg mass through a height of 50 metres in approximately 50 seconds would be [SCRA 1994; MH CET 2000]
Options:
A) 50 J/s
B) 5000 J/s
C) 100 J/s
D) 980 J/s
Show Answer
Answer:
Correct Answer: D
Solution:
$ P=\frac{mgh}{t} $ = $ \frac{100\times 9.8\times 50}{50}=980J/s $
