October 2021 Paper 1 Q2
2 An unmanned spacecraft has a weight of 5200 N on Earth. It lands on the surface of the planet Mars where the acceleration due to gravity is \(3.7\,\text{m}\,\text{s}^{-2}\).
Calculate the weight of the spacecraft on Mars. [3]
| Scheme | Marks | AO |
|---|---|---|
| Mass of craft is \(\dfrac{5200}{9.8} = [530.612\ldots]\) kg | M1 | 3.1b |
| Weight on Mars is \(3.7 \times \text{mass} = 3.7 \times 530.6122\) | M1 | 1.1b |
| \(= 1963\) N (1960 to 3s.f.) | A1 | 1.1b |
| [3] |
Notes
M1: Attempt to find the mass
M1: Use of ‘\(mg\)’ with Mars gravity
A1: Cao