Question

A body of mass 25 kg is supported by two strings whose lengths

are 3 m and 4 m respectively. Strings are supported from two

points in a horizontal line 5 metres apart. Find the tension in each

string.​

Answer 1

PHYSICS

A body weighing 13 kgf is suspended by two strings 5 m and 12 m long, their other ends being fastened to the extremities of a rod 13 m long. If the rod be so held that the body hangs immediately below the middle point. The tensions in the strings T

1

and T

2

are respectively-

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ANSWER

From the figure,

sinθ=

13

5

cosθ=

13

12

The horizontal force on the body balance each other.

Thus T

1

cosθ=T

2

cos(

2

π

−θ)

⟹T

1

cosθ=T

2

sinθ

Also the vertical components balance each other,

⟹13kgf=T

2

cosθ+T

1

sin(

2

π

−θ)

⟹13kgf=T

2

cosθ+T

1

sinθ

⟹T

1

=5kgf

T

2

=12kgf

solution