The limiting value of static friction between two contact surfaces is ...........
Proportional to normal force between the surface in contact
Independent of apparent area of contact
Depends on the microscopic area of contact
All of these
What is the maximum value of the force $F$ such that the block shown in the arrangement, does not move ........ $N$
In a tonga, horse pulls a wagon. Which is the correct analysis of the situation?
A box of mass $m\, kg$ is placed on the rear side of an open truck accelerating at $4\, m/s^2$. The coefficient of friction between the box and the surface below it is $0.4$. The net acceleration of the box with respect to the truck is zero. The value of $m$ is :- $[g = 10\,m/s^2]$
A $\vec F\,\, = \,\,\hat i\, + \,4\hat j\,$ acts on block shown. The force of friction acting on the block is :
A metal block is resting on a rough wooden surface. A horizontal force applied to the block is increased uniformly. Which of the following curves correctly represents velocity of the block ?