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The mass of Mars is approximately 0.1 times the mass of Earth and Mars’ diameter is approximately 0.5 times that of Earth. What is the approximate acceleration due to gravity on the surface of Mars?
The gravitational potential at a point P above the surface of a planet is defined as the work done per unit mass in moving a small test mass between P and another point. Which of the following defines this displacement?
An astronaut has a weight of 589 Newtons on Earth. He travels to a distant planet, where his weight is now 1411 Newtons. The acceleration due to gravity on the surface of this planet is:
Which of the following lists of factors can all affect the strength of gravity measured at the surface of Earth?
What is the weight of a 24 kg mass on Mars, where the local acceleration due to gravity is equal to 3.5 ms-2?
There are a number of reasons which contribute to variations in the value of the local acceleration due to gravity at specific locations on the surface of the Earth. Which of the following pairs of reasons would not be responsible for such variations?
An object on Mars has a weight of 222 N and experiences an acceleration due to gravity of 3.7 m s-2. On the Moon, the acceleration due to gravity is 1.6 m s-2. What would be the weight of this object on the Moon?
The graph shows how the gravitational potential energy (Ep) of a satellite changes with its altitude.
A 500 gram object has a weight of 2 N on the surface of Planet Y. What is the acceleration due to gravity on the surface of Planet Y?
A satellite of mass m in orbit around the Earth has a velocity of v. The gravitational potential energy of the satellite is: