Question

Two persons are holding a rope of negligible weight tightly at its ends so that it is horizontal. A `15kg` weight is attached to rope at the midpoint which now no more remains horizontal The minimum tension required to completely straighten the rope is .
A. `150N`
B. `75N`
C. `50N`
D. Infinitely large

Answer 1

Correct Answer - D
`T =F, 2T cos theta =mg`
To make rope straight `theta =90^(@)` .