AP EAMCET2014PhysicsLaws of Motion
A mass M ~kg is suspended by a weightless string. The horizontal force required to hold the mass at 60^ with the vertical is
Options
- AM g
- BM g 3
- CM g( 3 +1)
- DM g 3
Correct answer
B. M g 3
Step-by-step solution
By Newton's law gathered F=T M g=T gathered Dividing Eq. (i) by Eq. (ii), we get aligned F M g & = T T F & =M g ( =60^ given ) F & =M g 60^ F & = 3 M g aligned