Question

1 a Suggest three things you can do to change your mass. b How could you change your weight without changing your mass? 2 Use information from the table in question 3 to work out the gravitational field strength on: a Venus b Mars c Earth 3 Complete the gaps in this table, using your answers to question 2 to help you. Tool Mass (kg) Spacesuit 70 Rover vehicle 200 Rock samples 50 Spanner 0.06 Screwdriver j Weight on Earth (N) Weight on Venus (N) 686 C e g 0.049 a W mg d 445 h k Weight on Mars (N) b 740 f i​

Answer 1

1. Increase your caloric intake, reduce your caloric expenditure, and engage in regular physical activity.

2. Eat a balanced diet and focus on nutrient dense foods such as vegetables, protein and healthy fats.

3. Monitor your progress with a food diary and weigh-in, so that you can track any changes in your weight.

To change your weight without changing your mass, you can increase or decrease the gravitational field strength on the planet. For example, if you were to travel to the Moon, your weight would decrease due to the weaker gravitational pull.

Using information from the table in question 3, the gravitational field strength on Venus is 8.87 m/s2, on Mars it is 3.71 m/s2, and on Earth it is 9.81 m/s2.

Complete the gaps in this table, using your answers to question 2 to help you:

Tool Mass (kg) Spacesuit 70 Rover vehicle 200 Rock samples 50 Spanner 0.06 Screwdriver j Weight on Earth (N) 686 Weight on Venus (N) 693 Weight on Mars (N) 445