Friction is the force that opposes the motion of one surface as it moves over another surface. It is caused by the irregularities present on the surfaces in contact. These irregularities create resistance to the motion, resulting in the generation of heat.
Types of Friction
There are several types of friction:
Static Friction: This type of friction acts on objects that are not moving. It prevents the object from starting to move when a force is applied.
Friction is a fundamental force that has widespread effects in our daily lives and in the functioning of machines and devices. Understanding the factors affecting friction and how it can be reduced is essential in various fields of science and engineering.
Use models to describe that energy in animals’ food (used for body repair, growth, motion, and to maintain body warmth) was once energy from the sun.