Question

The adjacent figure is the part of a horizontally stretched net. section AB is stretched with a force of 10 N . The tensions in the sections BC and BF are

A. 10N,11N
B. 10N,6N
C. 10N,10N
D. cannot be calculated dir to insufficient data

Answer 1

Correct Answer - C
( c) As shown in figure

`T_(1) cos 30^(@) =T_(2) cos 30^(@)`
` therefore T_(1)=T_(2)=T` ( let)
Again, `T_(1) sin 30^(@) +T_(2) sin 30^(@) =10 " and " 2T sin 30^(@)=10`
`implies 2T.(1)/(2)=10 implies T=10 N`
Thus, the tension in section BC and BF are 10 N and 10 N respectively.