the potential energy of a body whose mass is 5 kg is kept on a pole of height 20 meter is
a)9.8 j
b)980 j
c)100 j
d) none of these
Answers
Answered by
6
Data:
m=5kg
g=10m/s
h=20m
Solution:
P. E =mgh
P. E=(5)(10)(20)
P. E=1000 joules
m=5kg
g=10m/s
h=20m
Solution:
P. E =mgh
P. E=(5)(10)(20)
P. E=1000 joules
1012naman:
sorry wrong answer
Pe=mgh
m= 5 g = 9.8 h =20
5× 9.8 ×20= 980
that is Right answer
estimated value of g taken is 10
well 9.8 is mostly used
nothing
thanks
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