1.

A box of mass 2 kg is placed on the roof of a car. The box would remain stationary untill the car attains a maximum acceleration. Coefficient of static friction between the box and the roof of the car is 0.2 and g = 10 ms^(-2). This maximum acceleration of the car, for the box to remain stationary, is

Answer»

`8ms^(-2)`
`6ms^(-2)`
`4ms^(-2)`
`2ms^(-2)`

SOLUTION :For the box to remain stationary
`ma_("MAX")=mu_(s)MG`
`a_("max")=mu_(s)g=0.2xx10ms^(-2)=2ms^(-2)`


Discussion

No Comment Found

Related InterviewSolutions