हिंदी

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

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/kg

Advertisements

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

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2018-2019 (March) Balbharati Model Question Paper Set 2

संबंधित प्रश्न

Why are geostationary satellites not useful for studies of polar regions?


Complete the following table.


Considering first correlation, complete the second.
Hubble telescope : At 569 km above the earth’s surface
Orbit of Hubble telescope : .............................


A group of students from COEP Pune sent a small satellite _______ through ISRO in 2016.


Calculate the critical velocity of the satellite to be located at 35780 km above the surface of earth.


What is 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

Write a note on orbital velocity


Numerical problem.

Calculate the speed with which a satellite moves if it is at a height of 36,000 km from the Earth’s surface and has an orbital period of 24 hr (Take R = 6370 km) [Hint: Convert hr into seconds before doing calculation]


Numerical problem.

At an orbital height of 400 km, find the orbital period of the satellite.


What is microgravity?


The orbital velocity of the satellite depends on its ______.


Give scientific reasons.

The geostationary satellite is not useful in the study of polar regions.


Calculate the time taken by a satellite for one revolution revolving at a height of 6400 km above the earth's surface with a velocity of 5.6 km/s.


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.)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×