Impending relative motion is opposed by which type of friction ?
The limiting friction between two bodies in contact is independent of
A $\vec F\,\, = \,\,\hat i\, + \,4\hat j\,$ acts on block shown. The force of friction acting on the block is :
When two surfaces are coated with a lubricant, then they
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 horizontal force that should be applied on the block to keep it adhere to the wall will be $N$ $\left[ g =10\, ms ^{-2}\right]$
To avoid slipping while walking on ice, one should take smaller steps because of the