A lamp hangs at rest from a ceiling on a cable.
The weight of the lamp is 15 N.
The Table describes four forces, P, Q, R and S.
Table
| Force | Description |
|---|---|
| P | gravitational force of the Earth on the lamp |
| Q | force of the cable on the lamp |
| R | force of the lamp on the cable |
| S | gravitational force of the lamp on the Earth |
Give the size and the direction of force S.
Force P and force Q are equal in size and opposite in direction.
Explain why force P and force Q are not an interaction pair.
Give the letter of the force that forms an interaction pair with force Q.
Give the letters of the two non-contact forces in the Table.
The cable breaks.
Describe what happens to forces P, Q and R immediately after the cable breaks.
93 exam-style questions on Edexcel GCSE Physics 9.1 Forces and vectors, covering 9.1.1 Interactions and types of force, 9.1.2 Vector and scalar quantities, and 9.1.3 Vector diagrams and free body diagrams. Each one has a worked solution and a mark scheme showing where the marks go.