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➡️ Drawing Force Diagrams

Learn the scientist's secret code for forces: arrows that show both the direction a force acts and, by their length, how strong it is.

lessons

~15 min

to learn

🔬 Science

subject

Ages 6–12

level

Start the course →

What you’ll learn

Arrows Show ForcesUnderstand that a force arrow shows the direction a force acts.Scientists draw force arrows to picture forces. A force arrow points in the direction a force pushes or pulls, and we draw one arrow for each force acting on an object.
Size and DirectionRead arrow length as the size of a force and compare opposing forces.A force arrow shows two things: direction and size. It points the way the force acts, and its length shows how strong the force is — longer means bigger. Equal opposite arrows balance, so nothing moves.
Reading Force DiagramsRead and draw force diagrams with arrows pointing in any direction.Force arrows can point any way a force acts, such as up for a rocket's thrust and down for gravity. To read a diagram, look at each arrow's direction for the way the force acts and its length for how strong it is.

Questions this course answers

What does a force arrow show?

A force arrow points in the direction the force is pushing or pulling.

An arrow on a box points to the right. This means the box is being...

The arrow points right, so the force is pushing the box to the right.

What does a LONGER force arrow mean?

A longer arrow means a bigger, stronger force. A short arrow means a small one.

Two equal arrows point in opposite directions on a rope. What happens?

Equal, opposite arrows show balanced pulls, so the rope does not move.

Can a force arrow point downward?

Force arrows can point any direction, including down — for example gravity pulling a rocket back to Earth.

How do you show a bigger force in a diagram?

You show a bigger force by drawing a longer arrow. Length, not colour, shows strength.

Grounded in trusted sources

BBC Bitesize — Forces
The Physics Classroom

Every Wunder lesson is built from real, reputable sources — never invented.

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