A mass M of 100 kg is suspended with the use of strings A, B 90 and C as shown in the figure, where W is the vertical wall and R is a rigid horizontal rod. The tension in the string B is

Options

A. 100g N
B. Zero
C. `100 sqrt(2)gN`
D. `(100)/(sqrt(2))gN`

Answer

A

Explanation

Let T be the tension in the string C. Hence

`T cos45^(@)=Mg`
`T sin 45^(@)`= tension in B
Hence, tension in B = Mg= 100g N