P5- Forces

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Vector quantities will have a magnitude (Size) and a direction.

Scalar Quantities will have a magnitude but no direction.

Scalar Quantities: Speed, distance, mass, temperature, time

Vector Quantities: Speed, distance, mass, temperature, time

A force is a push or pull that acts on the object.

Mass is the amount of matter in the object.

Measured in Kilograms (Kg)

The point is called the Centre Of Mass.

Weight is measured in Newton (N)

Weight is a force that will act on the object due to gravity.

The mass of an object will always be the same.

Weight can be measured by using a spring balance or a Newtonmeter.

Weight= Newtons (N)

Mass= Kilograms (Kg)

Gravitational Field Strength= Newton per Kilogram (N/Kg)

A resultant force is the Overall force on the point or object.

When a force moves an object through a distance, The ENERGY IS TRANSFERRED and WORK IS DONE on the object.

Work done= Force× Distance

Work done= Joules (J)

Force= Newtons (N)

Distance= Metres (M)

When you apply a force to an object it will deform, stretch, compress or bend.

Work done is when the force stretches or compresses an object.

When the force stretches a spring it will cause to extend.

The spring that is contrasted will depend on the object that you are stretching.

Graphs

  • You can plot a graph with the force that is applied to spring and the extension.
  • When the graph is in a straight line there will be a linear relationship between the force and the extension.
  • The gradient of the

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