a 90-kg satellite orbits a distant planet with a radius of 4000 km and a period of 280 min. From the radius and period, you calculate the satellite's acceleration to be 0.56 m/s^2. What is the gravitational force on the stellite?

At the surface of a certain planet, the gravitational acceleration g has a magnitude of 17.0 m/s^2 . A 26.0-kg brass ball is transported to this planet. - What is the mass of the brass ball on the Earth and on the planet? - What is the weight of the brass ball on the Earth and on the planet?

Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller diameter. If you weigh 650 NN on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 24.0 km ? Take the mass of the sun to be ms = 1.99×1030 kg, the gravitational constant to be G = 6.67×10−11 N⋅m2/kg^2, and the free-fall acceleration at the earth's surface to be g = 9.8 m/s^2. Express your weight wstar in newtons.

A planet orbiting a distant star has radius 3.54×106 mm. The escape speed for an object launched from this planet's surface is 7.65×103 m/sm/s. What is the acceleration due to gravity at the surface of the planet? Express your answer with the appropriate units.