A hypothetical planet has mass of four times that of the Earth and radius of twice that of the Earth? What is the acceleration due to gravity on the planet in terms of the acceleration on the Earth? A. g B. g/2 C. g/4 D. 2g E. g/8
Two planets X and Y have the same surface gravity, but planet X has four times the mass of planet Y What is the radius of planet X in terms of the radius of planet Y? A. Rx = 4 Ry B. Rx = 16 Ry C. Rx = 8 Ry D. Rx = 2 Ry E. Rx = 1/2 Ry