हिंदी

Mahendra and Virat are sitting at a distance of 1 m from each other.Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? (G = 6.67 × 10-11 Nm2/kg2) - Science and Technology 1

Advertisements
Advertisements

प्रश्न

Mahendra and Virat are sitting at a distance of 1 m from each other.Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? (G = 6.67 × 10-11 Nm2/kg2)

संक्षेप में उत्तर
संख्यात्मक
Advertisements

उत्तर

Given: Distance (r) = 1 m, mass (m1) = 75 kg, mass (m2) = 80 kg, gravitational constant (G) = 6.67 × 10-11 Nm2/kg

To find: Gravitational force (F)

Formula: F = `("Gm"_1"m"_2)/"r"^2`

Calculation: From formula,

F = `(6.67 xx 10^-11 xx 75 xx 80)/1^2`

∴ F = 4.002 × 10-7 N

The gravitational force between Mahendra and Virat is 4.002 × 10-7 N.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Gravitation - Solve the following Questions

APPEARS IN

संबंधित प्रश्न

Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.


The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Why?


Answer the following:

An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity?


Choose the correct alternative:

Acceleration due to gravity is independent of mass of the earth/mass of the body.


State two applications of universal law of gravitation.


At noon, the sun and the earth pull the objects on the earth's surface in opposite directions. At midnight, the sun and the earth pull these objects in same direction. Is the weight of an object, as measured by a spring balance on the earth's surface, more at midnight as compared to its weight at noon?


A thin spherical shell having uniform density is cut in two parts by a plane and kept separated as shown in the following figure. The point A is the centre of the plane section of the first part and B is the centre of the plane section of the second part. Show that the gravitational field at A due to the first part is equal in magnitude to the gravitational field at B due to the second part.


How will the force of gravitation between two objects change if the distance between them is:
Halved


How will the force of gravitation between two objects change if the distance between them is:
Almost zero


Where will you weigh more: at the moon's surface or at the earth's surface?


What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.


What does a force do in the following case?
You pull the skin of your arm


An apple falls towards the earth due to its gravitational force. The apple also attracts the earth with the same force. Why do we not see the earth rising towards the apple? Explain.


The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is _______ of the distance between them.


If the law of gravitation, instead of being inverse-square law, becomes an inverse-cube law- ______.

  1. planets will not have elliptic orbits.
  2. circular orbits of planets is not possible.
  3. projectile motion of a stone thrown by hand on the surface of the earth will be approximately parabolic.
  4. there will be no gravitational force inside a spherical shell of uniform density.

Write the answer of the question with reference to laws of gravitation.

Write the value of the universal gravitational constant.


Find the gravitational force of attraction between the ring and sphere as shown in the diagram, where the plane of the ring is perpendicular to the line joining the centres. If `sqrt8` R is the distance between the centres of a ring (of mass 'm')and a sphere (mass 'M') where both have equal radius 'R'.

 


If three equal masses m are placed at the three vertices of an equilateral triangle of side 1/m then what force acts on a particle of mass 2m placed at the centroid?


Observe the figure and answer the questions:

  1. State Newton's universal law of gravitation.
  2. If the distance between the two bodies is tripled, how will the gravitational force between them change?
  3. What will happen to gravitational force, if mass of one of the object is doubled?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×