A block of mass M rests on a rough horizontal | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The force of friction is self-adjusting. When an applied force is increased,the static friction first increases linearly with the applied force (a

Vedclass · Accepted Answer

Vedclass · Answer

(A) The force of friction is self-adjusting. When an applied force is increased,the static friction first increases linearly with the applied force (and thus with time $t$,as the force is steadily increasing) until it reaches a maximum value called the limiting friction.Once the applied force exceeds the limiting friction,the block begins to slide.Since the coefficients of static and kinetic friction are assumed to be equal,the kinetic friction remains constant at the value of the limiting friction.Therefore,the frictional force $f$ increases linearly with time $t$ until the block starts to slide,after which it remains constant. This behavior is correctly represented by the graph in option $A$.

Similar Questions

If ${\mu _s}$,${\mu _k}$,and ${\mu _r}$ are coefficients of static friction,sliding (kinetic) friction,and rolling friction respectively,then:

The coefficient of static friction between a wooden block of mass $0.5\, kg$ and a vertical rough wall is $0.2$. The magnitude of the horizontal force that should be applied on the block to keep it adhered to the wall will be $N$ $\left[ g = 10\, m/s^2 \right]$.

The maximum static frictional force is

For a given mass,how does rolling friction compare to static friction and kinetic friction?

Vedclass Test Series

Exam Paper Generator

Online Exam Module