AP EAMCET202125 Aug 2021Morning ShiftPhysicsLaws of MotionActual
When a vehicle of mass m is moving with a velocity v over a concave over-bridge of radius of curvature r , the thrust on the road at the lowest point on the bridge will be
Options
- Am g+ m v^2 r
- Bm g- m v^2 r
- Cm^2 v^2 g r
- Dv^2 g r
Correct answer
A. m g+ m v^2 r
Step-by-step solution
Let the mass of the vehicle be m and velocity of the vehicle be v , the radius of curvature of over-bridge be r . The centripetal force on the vehicle = m v^2 r The thrust on the road at lowest point, F_ Net = weight of the vehicle + centripetal force =m g+ m v^2 r