Gravity on earth is 9.8 m/s2, and gravity on jupiter is 23.1 m/s2.

so, if the mass of a rock is 70 kilograms, its weight on earth is
newtons and its weight on jupiter is
newtons.

Weight on Earth = 686 N

Weight on Jupiter= 1617 N

Explanation:

The weight on the planet can be determined by the expression shown below as:

Thus, For Earth

Acceleration Gravity = 9.8 m/s²

Mass = 70 kg

So,

Weight on Earth = 686 N

For Jupiter

Acceleration Gravity = 23.1 m/s²

Mass = 70 kg

So,

Weight on Jupiter= 1617 N

The weight on Earth is 686 newtons and its weight on Jupiter is 1617 newtons.