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Class 11 NEET Physics Work, Energy and Power Questions
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© examsnet.com
Question : 67
Total: 89
A child is sitting on a swing. Its minimum and maximum heights from the ground
0.75
m
and
2
m
respectively, its maximum speed will be
(2001)
10
m
∕
s
5
m
∕
s
8
m
∕
s
15
m
∕
s
Validate
Solution:
Maximum drop in P.E. = maximumgain in K.E.
m
g
(
2
−
0.75
)
=
1
2
m
v
2
⇒
v
=
√
2
g
(
1.25
)
=
5
m
∕
s
© examsnet.com
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