Edexcel IGCSE Physics · Spec 1.5
Mass, Weight & Gravity
The difference between mass and weight, and gravitational field strength.
Physics revision video
Mass, Weight & Gravity
Prefer to watch on YouTube? Open this video on YouTube.
Spec 1.5
What you need to know
- Tell the difference between mass and weight
- Use weight equals mass times gravitational field strength
- Explain what g means
Active recall
Quick check
Answer each question before opening the answer.
What is the difference between mass and weight?
Mass is the amount of matter (kg) and is constant; weight is the force of gravity on that mass (N) and depends on gravitational field strength.
What is the equation for weight?
Weight = mass × gravitational field strength (W = m × g).
Physics video companion
Keep your notes and exam practice together
The free Physics workbook follows every video in specification order.