Find wrong statement
A car moving over a convex bridge is lighter than the same car resting on the same bridge
A car moving over a convex bridge is heavier than the same car resting on the same bridge
A car moving over a concave bridge is heavier than the same car resting on the same bridge
The weight of the car changes due to the centrifugal force for above cases
The horizontal acceleration that should be given to a smooth inclined plane of angle $sin^{-1}\, (1/l)$ to keep an object stationary on the plane relative to the inclined plane is
A body of mass $5\,kg$ is suspended by a spring balance on an inclined plane as shown in figure. (in $N$)
A mass of $2\, kg$ suspended with thread $AB$ (figure). Thread $CD$ of the same type is attached to the other end of $2\, kg$ mass. if the lower thread is pulled with a jerk, what happens ?
Two equal heavy spheres, each of radius $r$, are in equilibrium within a smooth cup of radius $3 r$. The ratio of reaction between the cup and one sphere and that between the two sphere is
In Newtonian mechanics which parameter apply external force ?