The size of a force is measured in units called newtons (N).

The size of a force can be measured with a newton meter.

A scale is a line on which different positions are marked.

Results are accurate if they are close to the true value of what is being measured.

A zero error is when a measuring device should read zero  but doesn’t.

Measuring forces

Science

What forces do

The different kinds of force

Using force arrows

Balanced and unbalanced forces

Friction

Reducing friction: practical

Reducing friction: analysis

Energy

Transferring energy

In the Hidden forces unit, they will build on this knowledge to learn about turning forces, forces that hold objects on a surface, and those that make some objects float.

In primary science, pupils learnt that air resistance, water resistance and friction push back against moving objects. 

This unit focuses on quantifying and comparing energy transfers in different processes, such as motion changes, electrical circuits, and fuel burning. It examines forces as interactions between objects, using diagrams and measurements, including contact and non-contact forces.

Forces

Physical activity and equipment requiring safe use

To measure the size of a force, you can use a {{}} meter.

Which gives the correct ways of writing the unit forces are measured in?

Take repeat readings to check for mistakes.

Check the newton meter reads zero with no force applied (check for a zero error)

Use a newton meter with the biggest possible range.

Which of the below are ways to read a newton meter more accurately? Tick as many as you think.

A zero error, all measurements are too high. Use the adjustment screw.

A zero error, all measurements are too low. Use the adjustment screw.

The force applied is beyond the range. Use a newton meter with a greater range.

The scale interval is too big. Use a newton meter with a smaller scale interval.

This newton meter has masses attached, applying a force. What is the issue and how should it be solved?

To stretch a spring further, __________ force is needed.

Select the different names this piece of equipment can be called.

The force needed to push a go-kart along a smooth path.

The gravitational force of Earth on a person.

The driving force provided by a jet engine on a jumbo jet.

The gravitational force of Earth on the moon.

Starting with the smallest force, put these forces in order of size.

Which of the following forces would not be easily measured by a force meter?

What interval does this scale go up in steps of?

Measuring forces

Lesson outcome

Content guidance