What is the acceleration due to gravity?

Talking the mass and radius of the earth as the units of mass and distance respectively, the mass of Mars turns out to be 0.107 unit and radius 0.53 units. What is the acceleration due to gravity on the Mar's surface? What will be the weight of a person on Mars if he weighs 98kg on earth.

The artificial satellite Aryabhatta was reported to revolve round the earth in 96.2 minutes at an average height of 600 km. With what velocity was it projected ? What was the acceleration due to gravity on the satellite ? (Radius of the earth = 6400 km)

What is acceleration due to gravity? What is its average value?

What will be acceleration due to gravity on a planet whose mass is 4 times and radius is 2 times that of earth ?

What is acceleration due to gravity? Obtain relations to show how the value of 'g' changes with Altitude.

What is acceleration due to gravity? Obtain relations to show how the value of 'g' changes with Depth.

What will be acceleration due to gravity on the surface of the moon if its radius were (1//4)^(th) the radius of earth and its mass (1//80)^(th) the mass of earth? What will be the escape velocity on the surface of moon if it is 11.2 km//s on the surface of the earth? (given that g=9.8 m//s^(2) )

At what height the acceleration due to gravity decreases by 36% of its value on the surface of the earth ?