Types of Forces In physics, forces are responsible for changing the motion or shape of an object. There are several types of forces: Gravitational force : The a...
In physics, forces are responsible for changing the motion or shape of an object. There are several types of forces:
An object is in equilibrium when the vector sum of all forces acting on it is zero. There are two conditions for equilibrium:
Force diagrams are visual representations of all forces acting on an object, drawn using vectors.
Problem: Draw a force diagram for a box resting on an inclined plane.
Solution: The forces acting on the box are:
Forces can be resolved into components along perpendicular axes using vector analysis.
Torque (τ) is the tendency of a force to cause rotational motion about a pivot point. It depends on the force magnitude, direction, and moment arm (perpendicular distance from the pivot).
The centre of gravity is the point at which the entire weight of an object is considered to act. For uniform gravitational fields, it coincides with the centre of mass.
The principle of moments states that for an object in rotational equilibrium, the sum of clockwise moments equals the sum of anticlockwise moments about any pivot point.