Weight Answer 1

1. The surface gravity of Mars is 3·7 N/kg. On Earth it is 9·8 N/kg. Beagle 2, the unsuccessful British space probe, had a mass of 30 kg.

Calculate the weight of Beagle 2:

1. on the Earth before launch.
   W = m × g = 30 × 9·8 = 294 N
2. on the surface of Mars.
   W = m × g = 30 × 3·7 = 111 N

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Weight Question 2