DISADVANTAGES OF FRICTION
The main disadvantage of friction is that it produces heat in various parts of machines.
• Heat produced due to friction causes damage to machine parts such as car brakes.
• Friction causes damage to tyres of vehicles.
Friction makes it hard to slide heavy objects such as a heavy piece of furniture or a large concrete block across the floor.
Friction causes damage to tyres of vehicles, soles of our shoes; machine parts, etc. make these objects wear away with time.
• This is the reason why machine parts are oiled. Oil is slippery and reduces the friction between parts of the machine.