Find the force a 68.5 kg person would experience while standing on the surface of Mars. Mars has a mass of 6.43 x 1023 kg and a radius of 3.43 x 106m from its center to the surface.

Question

anonymous · Answer

@YanaSidlinskiy

yanasidlinskiy · Answer

F = GM/r² = 6.674e-11N·m²/kg² * 68.5kg * 6.43e23kg / (3.43e6m)² = 250 N

anonymous · Answer

My only choices are 790N 259N 246N and 8.57*10^8

yanasidlinskiy · Answer

Shoot.

anonymous · Answer

Yea

yanasidlinskiy · Answer

Lets let you find what I have done wrong.. I really don't know what i have done wrong..

yanasidlinskiy · Answer

@chmvijay  What have I done wrong?

chmvijay · Answer

hey its right u can choose near one that is 246 N

anonymous · Answer

Why did it not come out to be exact?

yanasidlinskiy · Answer

Alrighty then. I guess I was right. Just like chmvijay said, Pick the closest one. I don't know. Good Question there. You might want to ask @chmvijay  For that one.

anonymous · Answer

Thank both of you :)

yanasidlinskiy · Answer

You're welcome:D!!