Physics: Moment of Force and Equilibrium

A force that balances another force, preventing motion or change in motion.

The sum of all forces acting on an object.

The study of forces in equilibrium, meaning objects are at rest or moving at a constant velocity.

The tendency of a force to cause rotation about a point.

An object that resists changes in shape and size when acted upon by forces.

Any influence that can cause an object to move or change its motion.

The state where an object is at rest or moving at a constant velocity.

The turning effect of a force about a fixed point (pivot) is known as the moment of force. It's determined by the force's magnitude and its perpendicular distance from the pivot.

The perpendicular distance from the line of action of a force to the pivot is known as the moment arm. This distance plays a key role in calculating the moment of force.

The moment of force is calculated as the product of the magnitude of the force and the moment arm. It's a measure of the rotational force.

A pair of equal and opposite forces acting on a body, forming a couple. The moment of the couple is measured by the product of one force and the perpendicular distance between them.

A body is in rotational equilibrium when the total clockwise moment equals the total counterclockwise moment acting on it. It won't rotate.

The principle of moments states that when a body is in rotational equilibrium (no rotation), the sum of clockwise moments equals the sum of counterclockwise moments.

The clockwise moment is the moment that would cause the body to rotate in a clockwise direction. It's calculated as the force multiplied by the perpendicular distance from the line of action of the force to the pivot point.

The counterclockwise moment is the turning effect that would cause the body to rotate in a counterclockwise direction. It's calculated as the force multiplied by the perpendicular distance from the line of action of the force to the pivot point.

A pivot point around which moments (turning effects) are calculated. It's the fixed point in a rotational system.

The tendency of a force to cause an object to rotate around a fixed point.

The condition when the total clockwise moment equals the total counter-clockwise moment.

The moment of force produced by a force acting at a perpendicular distance from the pivot point.

The sum of moments of force acting in the clockwise direction.

The sum of moments of force acting in the counter-clockwise direction.

A point about which an object rotates.

The point where a force acts on an object

The tendency of a force to cause rotation about a fixed point or axis.

A pair of equal and opposite forces that act on a rigid body, creating a turning effect.

The product of the force and the perpendicular distance from the axis of rotation to the line of action of the force.

A falling object that is only affected by gravity.

The force that opposes the motion of an object through a fluid (like air).

The constant velocity that a falling object eventually reaches, where the force of gravity is balanced by air resistance.

The force exerted by the Earth on all objects near it, causing falling objects to accelerate downwards.

The downward force on an object due to gravity.

A measure of the amount of matter in an object.

The state where the net force acting on an object is zero, resulting in no acceleration. The object is either at rest or moving at a constant velocity.

The rate at which an object's velocity changes over time.