Edexcel IGCSE Physics 1.12 Types of force
Practise recognising and labelling common forces on diagrams, including weight, drag, lift, thrust and upthrust.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Practise recognising and labelling common forces on diagrams, including weight, drag, lift, thrust and upthrust.
A ship floats on the sea.

The ship floats because of the forces acting on it.
The upward force acting on the ship is called upthrust.
This force is shown on the diagram.
Draw another labelled arrow on the diagram to show the other vertical force acting on the ship.
- downward arrow labelled weight
- downward arrow is equal in length to upthrust arrow
Accept:
- gravitational force / force due to gravity
Reject:
- gravity
Ignore:
- starting point of arrow
Marking guidance:
- Judge by eye.