6. The distances of two satellites from the surface of the earth are R and 7R. Their time periods of rotation
are in the ratio.
Answers
Answered by
0
The ratio of their time period is 1:7
Given data :
Their distance = R and 7R
For simplicity purpose,we assume that the velocity of these two sattelites are equal = x km/hr
So,the distance that has to be covered by,
First sattelite = 2πR
Second sattelite = 2π×7R = 14πR
Now,
First sattelite covers,
x km in = 1 hour
1 km in = 1/x hour
2πR km in = 2πR/x hour
Second sattelite covers,
x km in = 1 hour
1 km in = 1/x hour
14πR km in = 14πR/x hour
So,
Ratio of their time period = 2πR/x ÷ 14πR/x = 2πR/x × x/14πR = 1/7 = 1:7 (answer)
Similar questions