Physics

Introduction to Forces

Introduction to Forces

Forces are pushes or pulls. They are measured in newtons. Unbalanced forces change the way something is moving. This lecture briefly present on introduction to Forces. A force is an influence on a system or object which, acting alone, will cause the motion of the system or object to change. If a system or object at rest is subjected to a non-zero force it will start to move. Examples: Weight is a force caused (on Earth) by the gravitational attraction of a mass to the Earth’s centre. The force that the string exerts on the object in these types of problems is called tension.