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1. Why are some satellites called geostationary?
Since the rotation of the Earth is , a satellite also remains in a relative to a point on the Earth’s surface.
The orbit in which the satellite stays over the all the time is known as 'geostationary'.
2. A man weighing \(60\ kg\) in the Earth will weigh \(1680\ kg\) in the Sun. Why?
The weight of the object in a planet depends upon the exerted by the . The Sun's gravity is higher than that of Earth.
Hence, to get the weight of an object in Sun, the value is .
Here, an object with \(60\ kg\) in the Earth will weigh in the Sun.
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