Friction Mock Tests

A block of mass 10 kg rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of static friction is 0.6. The frictional force acting on the block is: (Take g = 10 m/s², sin 30° = 0.5, cos 30° = 0.866)

A force of 40 N is applied horizontally on a block of mass 10 kg placed on a rough horizontal surface with coefficient of kinetic friction 0.3. The block starts from rest. What is the speed of the block after it has traveled 8 m? (Take g = 10 m/s²)

Rolling friction is:

Which type of friction is the weakest among the following?

Which type of friction acts on objects that are already in motion?

A force F is applied to a block of mass 5 kg resting on a rough horizontal surface with coefficient of static friction μ_s = 0.4. What is the minimum magnitude of force F required to just start moving the block? (Take g = 10 m/s²)

A block of mass m slides down a frictionless incline at angle θ. The normal force exerted by the incline on the block is:

A block of mass 10 kg rests on an inclined plane with coefficient of static friction 0.5. The minimum angle of inclination at which the block just begins to slide is: (take g = 10 m/s²)