Let's solve each problem step by step using the formula:
Weight = mass × gravitational field strength
---
1. Car on Earth
- Mass = 1,200 kg
- Gravitational field strength (g) = 9.8 N/kg
$$
\text{Weight} = 1,200 \, \text{kg} \times 9.8 \, \text{N/kg} = 11,760 \, \text{N}
$$
✔ Answer: 11,760 N
---
2. Lunar Rover on the Moon
- Mass = 210 kg
- g = 1.6 N/kg
$$
\text{Weight} = 210 \, \text{kg} \times 1.6 \, \text{N/kg} = 336 \, \text{N}
$$
✔ Answer:
Weight = 210 kg × 1.6 N/kg = 336 N
---
3. Mars Rover on Mars
- Mass = 210 kg
- g = 3.7 N/kg
$$
\text{Weight} = 210 \, \text{kg} \times 3.7 \, \text{N/kg} = 777 \, \text{N}
$$
✔ Answer:
Weight = m × g = 210 kg × 3.7 N/kg = 777 N
---
4. Rock on Venus
- Mass = 0.8 kg
- g = 8.8 N/kg
$$
\text{Weight} = 0.8 \, \text{kg} \times 8.8 \, \text{N/kg} = 7.04 \, \text{N}
$$
✔ Answer:
Weight = 0.8 × 8.8
= 0.8 kg × 8.8 N/kg
= 7.04 N
---
5. Neil Armstrong on the Moon
- Mass = 100 kg
- g = 1.6 N/kg
$$
\text{Weight} = 100 \, \text{kg} \times 1.6 \, \text{N/kg} = 160 \, \text{N}
$$
✔ Answer:
Weight = 100 × 1.6
= 100 kg × 1.6 N/kg
= 160 N
---
6. Satellite in Outer Space
- Mass = 500 kg
- g = 0 N/kg (in outer space, no gravity)
$$
\text{Weight} = 500 \, \text{kg} \times 0 \, \text{N/kg} = 0 \, \text{N}
$$
✔ Answer:
Weight = 500 × 0
= 500 kg × 0 N/kg
= 0 N
> Note: The satellite still has
mass, but its
weight is zero because weight depends on gravity.
---
✔ Final Answers Summary:
1.
11,760 N
2.
210 kg × 1.6 N/kg = 336 N
3.
210 kg × 3.7 N/kg = 777 N
4.
0.8 kg × 8.8 N/kg = 7.04 N
5.
100 kg × 1.6 N/kg = 160 N
6.
500 kg × 0 N/kg = 0 N
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Parent Tip: Review the logic above to help your child master the concept of calculating weight worksheet.
