Question:
find the ratio of acceleration due to gravity of two planets if their radii are in ratio 1:2 under the condition 1. Mass remains same 2. Material remains same
Answer:
1. Acceleration due to gravity of first planet of mass m and radius r1 is :
g1 = G m / r12 (i)
Acceleration due to gravity of first planet of mass m and radius r2 is :
g2 = G m / r22 (ii)
Divide (i) by (ii)
g1/g2 = r22 / r12 = 22/12 = 4 : 1
2. Material will not make any difference to the ration of acceleration due to gravity of the two planets.
Not what you are looking for? Go ahead and submit the question, we will get back to you.
