Answer:
About 1/3 of the weight of the probe on Earth's surface
Step-by-step explanation:
The weight of the probe is given by
W = mg
where
W is the weigth
m is the mass of the probe
g is the acceleration due to gravity
We notice that:
- m (the mass) is constant, since it depends only on the properties of the probe, so it does not change when the probe moves to Mars
- g' (the acceleration due to gravity on Mars) is 1/3 of g (acceleration due to gravity on Earth)
So, the weight of the probe on Mars surface is

So, the weight of the probe on Mars surface is 1/3 the weight of the probe on Earth's surface.