What will be the speed of an artificial satellite orbiting the earth at a
distance of 8400 km from the centre of earth and taking 2 hours for each
revolution? What will be the displacement of the artificial satellite at the end of 3 hrs? What will be the distance travelled by the artificial satellite at the end of 4 hours?
Answers
Answer:
Speed = Distance ÷ Time
1st question answer)
8400 ÷ 2 = 4200
Speed = 4200 per hour
2nd question answer)
Distance per hour = 4200
Displacement of the satellite after 3 hours = 4200 x 3
= 12,600
3rd question answer)
Distance per hour = 4200
Distance travelled by satellite at the end of 4 hours = 4200 x 4
= 16,800
Hope it helps! Thank you!
Given : an artificial satellite orbiting the earth at a distance of 8400 km from the centre of earth and taking 2 hours for each revolution
To Find : Speed of Satellite
The displacement of the artificial satellite at the end of 3 hrs What will be the distance travelled by the artificial satellite at the end of 4 hours
Solution:
Distance covered in one revolution = 2 π R
R = 8400 km
= 2 (22/7) * 8400
= 44 * 1200
= 52800 km
Time = 2 hrs
Speed = 52800/2 = 26400 km/hr
in 3 hrs one and half revolutions will be completed hence Satellite will be just opposite
Hence Displacement = 2R = 2 * 8400 = 16800 km
distance travelled by the artificial satellite at the end of 4 hours
= 2 revolutions
= 2 * 52800 km
= 105600 km
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