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Byju's Answer
Standard XII
Physics
Problem Solving
A duster weig...
Question
A duster weighting
0.5
k
g
is pressed against a vertical wall with a force of
11
N
. If the coefficient of friction is
0.5
. Check whether the work done in rubbing it upward by distance of
10
c
m
is less or greater than
0.55
J
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Solution
f
s
=
(
11
)
(
μ
)
[Ref. image]
as
N
=
11
∴
f
s
=
(
11
)
(
0.5
)
=
5.5
Newtons
Work done
=
M
g
(
0.1
)
+
f
s
(
0.1
)
So, it is greater than 0.55
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0
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