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Byju's Answer
Standard IX
Physics
Potential Energy
A ball of 1...
Question
A ball of
1
2
kg is dropped from height find the workdone by its weight in 1 sec after the ball is dropped.
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Solution
Weight of ball ,
W
=
m
g
=
0.5
×
10
=
5
N
Displacement after
1
secs ,
S
=
1
2
g
t
2
=
1
2
×
10
×
1
=
5
m
Work done by its weight
=
F
o
r
c
e
⋅
d
i
s
p
l
a
c
e
m
e
n
t
=
m
g
S
=
5
×
5
=
25
J
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