Question

A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/s. If the man’s weight is 50kg, his acceleration is ___________

(a) 7.6 km/s^2

(b) 7.6 m/s^2

(c) 8.4 m/s^2

(d) 10 m/s^2

This question was posed to me during a job interview.

I'd like to ask this question from Orbital Velocity topic in chapter Kinetic Theory of Gases of Engineering Physics I

Answer 1

The correct answer is (c) 8.4 m/s^2

The explanation is: gh=R^2/(R+h)^2 g

gh=(6400×10^3)^2/[(6400+520)×10^3]^2 ×10=8.4m/s^2.