A mass M is hung from a string fixed to erigid
Support. The tension in the string is........
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Explanation:
Given that,
Mass = M
Length = L
Tension = T
We know that,
dT=dmg
∫dT=
0
∫
L−l
dmg
Now,
dx
dm
=
L
M
dm=
L
M
dx
Now, put the value of dm
T=
0
∫
L−l
L
M
dxg
T=
L
Mg
[L−l]
T=(1−
L
l
)Mg
Hence, the tension is (
L
L−l
)Mg
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