Advertisements
Advertisements
प्रश्न
Mahendra and Virat are sitting at a distance of 1 metre from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? G = 6.67 x 10-11 Nm2/kg2
उत्तर
Given : r = 1 m, m1 = 75 kg, m2 = 80 kg
and G = 6.67 x 10 -11 Nm2/kg2
According to Newton’s law
`F = (Gm_1m_2)/(r^2)`
`F=(6.67 xx 10^(-11) xx 75 xx80)/1^2 n`
` = 4.002 xx 10^-7 N`
The gravitational force between Mahendra and Virat is 4.002 x 10-7 N
APPEARS IN
संबंधित प्रश्न
Answer the question:
What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified?
Why are geostationary satellites not useful for studies of polar regions?
If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, then what would be the height of a satellite taking \[2\sqrt{2} T\] seconds for one revolution?
Name the first artificial satellite sent by Russia in space.
The function of a satellite launcher is based on Newton's second law of motion.
Calculate the critical velocity of the satellite to be located at 35780 km above the surface of earth.
Distinguish between:
High Earth orbit - Medium Earth orbit.
Write functions of Military satellite and Navigational satellite.
Note the relationship between the entries in all the three columns in the table and rewrite the table.
Column-1 (Location) |
Column-2 Height from the earth’s surface (km) |
Column-3 g (m/s2) |
Earth’s surface (average) | 8.8 | 0.225 |
Mount Everest | 36.6 | 9.81 |
Maximum height ever reached by manmade balloon | 400 | 9.8 |
Orbit of a typical weather satellite | 35700 | 9.77 |
Orbit of communication satellite | 0 | 8.7 |
How is a satellite maintained in nearly circular orbit?
Why are some satellites called geostationary?
Write down the formula of orbital velocity.
Geostationary satellites are not useful for studies of the polar region.
The height of medium earth orbit above the surface of the earth is ______.
Write the name of small satellite made by a group of students from COEP (College of Engineering, Pune) sent to the space through ISRO in 2016.
Complete the Following table.
Sr. no. | Type of Satellite | The names of Indian Satellite and launcher |
(1) | Navigational Satellite | Satellite: ______ |
Launcher: ______ | ||
(2) | Earth Observation Satellite | Satellite: ______ |
Launcher: ______ |
The orbit of a satellite is exactly 35780 km above the earth's surface and its tangential velocity is 3.08 km/s.
How much time the satellite will take to complete one revolution around the earth?
(Radius of earth = 6400 km.)