Questions
What is the change in potential energy ( in calories) of a 10 kg mass after 41.8m of fall?
a
1000 cal
b
800 cal
c
1500 cal
d
2000 cal
detailed solution
Correct option is A
Change in potential energy = ΔU=mgh=10×10×41.8=4180J If mechanical energy in joule produces the same temperature change as heat, we write, W=JH, H=ΔUJ=41804.18 =1000 calTalk to our academic expert!
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