On earth, the gravitational force of a robotic helicopter is 1.8 kg what is a helicopter gravity hill force on Mars
The question seems to have some missing or incorrect information.
Firstly, the phrase "the gravitational force of a robotic helicopter is 1.8 kg" is not accurate. Gravitational force is usually measured in units of Newtons (N), not kilograms (kg). The weight of an object on Earth is given by the formula W = m * g, where W is the weight, m is the mass, and g is the acceleration due to gravity (approximately 9.8 m/s^2 on Earth).
Secondly, the phrase "helicopter gravity hill force on Mars" is not clear. It is unclear what is meant by "gravity hill force" and how it relates to the helicopter. Additionally, the question does not provide any information about the mass or weight of the helicopter.
If you can provide more specific information or clarify the question, I will be happy to help you with the calculation.