Questions & Answers
Question
Answers

State two advantages and disadvantages of friction.

Answer Verified Verified
Hint- Here, we will proceed by defining the term friction or frictional force and then we will be discussing the various advantages and disadvantages experienced in case of friction or when frictional force is there.

Complete step by step answer:
Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces, such as the traction needed to walk without slipping, may be beneficial, but they also present a great measure of opposition to motion.
Advantages of friction are:
$1.$ If we are walking or running, we use the friction with the ground to move our body forward, to turn left or right, or to stop.
$2.$ Brakes on a car use friction to stop the vehicles.
$3.$ Friction makes many types of motion possible.
Disadvantages of friction are:
$1.$ Extra friction makes it difficult to move an object, such as sliding a box across the floor or walking in deep snow.
$2.$ Friction can create heat energy, but this could overheat and damage an object, such as the wheels of a car.
$3.$ The force of friction acts in the opposite direction to the direction in which the object is moving, so friction slows down the motion of the moving objects.

Note- There are two different types of friction (or frictional forces). These include dry friction and fluid friction. Dry friction describes the reaction between two solid bodies in contact when they are in motion (kinetic friction) and when they are not (static friction) whereas Fluid Friction is the force that obstructs the flow of fluid.