JEE Main201815 Apr 2018Morning ShiftPhysicsRotational MotionActual
A uniform rod A B is suspended from a point X , at a variable distance from x from A , as shown. To make the rod horizontal, a mass m is suspended from its end A . A set of (m, x) values is recorded. The appropriate variable that give a straight line, when plotted, are:
Options
- Am, 1 x
- Bm, 1 x^2
- Cm, x
- Dm, x^2
Correct answer
A. m, 1 x
Step-by-step solution
Balancing torque w.r.t. point of suspension aligned &m g x=M g ( 2 -x ) & m x=M 2 -M x &m= (M 2 ) 1 x -M aligned y= 1 x -C Straight line equation.