Different forces act in different ways. Some forces pull objects downward, some push upward, and others resist motion or pull through ropes and cables.

Audio Explanation

Prefer to listen? Here's a quick audio summary of the different types of forces.

Visual Representation

What is a Force?

A force is a push or a pull.

Forces can:

  • Change an object’s speed
  • Change an object’s direction
  • Start motion
  • Stop motion

Forces are measured in newtons (N).

Common Types of Forces

Gravitational Force (Weight)

Gravity pulls objects downward toward Earth.

  • Gravity acts on all objects with mass.
  • The force of gravity on an object is called its weight.
  • Gravity always acts downward.

Normal Force

The normal force is the support force from a surface.

  • A table pushes up on a book.
  • The ground pushes up on your feet.
  • Normal force acts perpendicular to the surface.

Friction Force

Friction opposes motion between two surfaces.

  • Friction slows things down.
  • Friction acts parallel to a surface.
  • Friction points opposite the direction of motion.

Tension Force

Tension is the pulling force in a rope, cable, or string.

  • Tension always pulls.
  • Tension acts along the rope or string.
  • A hanging sign or tug-of-war rope has tension.

Applied Force

An applied force is any push or pull from a person or another object.

  • Pushing a shopping cart is an applied force.
  • Pulling a wagon is an applied force.
  • Applied forces can point in any direction.

Interactive: Visualizing Forces

Click on different scenarios to see how various forces act on objects.

``` Visualizing Types of Forces An interactive demonstration of different types of forces acting on objects in various scenarios. Surface Object F_g (Weight) F_N F_f F_app F_T

Click on different scenarios to see how various forces act on objects.

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Key Ideas About Forces

  • Gravity pulls downward.
  • Normal force pushes upward from a surface.
  • Friction opposes motion.
  • Tension pulls through ropes and cables.
  • Applied forces can be pushes or pulls.

Interactive Match: Types of Forces

Test your understanding of the different types of forces.

Click a term and then its matching meaning. Match all pairs to complete the activity.

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💡 Quick Concept Check:

What force pushes upward on a book sitting on a table?

Click to Reveal Answer
The upward force is the normal force from the table.
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