Question

1. A uniform rod AB of weight 100N and length 2m supported by two vertical strings at its ends and carries a load of 20kgf as shown in the figure. Find the tension in strings​

Answer 1

(The diagram missing in the question is attached below)

Given :

Weight of the rod = 100N

Length of the rod = 2m

Load = 20 kgf

To Find :

The tension in the strings = ?

Solution :

• Assume Tension in the string at A = T₁

             Tension in the string at B = T₂

• By considering moment of forces at point A

            $100\times1+(200 \times0.5)=T_{2} \times2$

            $2T_{2} =200$

            $T_{2} =100N$

• The net force on the rod should be zero

            $F_{upward} = F_{downward}$

            $T_{1} +T_{2} =200+100$

            $T_{1} +T_{2} =300$

            $T_{1} =200N$

The tension in the strings are T₁ = 200N & T₂ = 100N.