Explain gravitational force exerted by an extended object.
Text Solution
Verified by Experts
`implies` For the gravitational force between an extended object like earth and a point mass equation `F= (Gm_1 m_2)/r^2` is not directly applicable. `implies` Each point mass in the extended object will exert a force on the given point mass and these force will not all be in the same direction. To add up these forces vectorially for all the point masses in the extended object to get the total force. `implies` This is easily done using Calculus.
Topper's Solved these Questions
GRAVITATION
KUMAR PRAKASHAN|Exercise Section - A Try Yourself (VSQs)|76 Videos
GRAVITATION
KUMAR PRAKASHAN|Exercise Section - B Numericals (Numerical From Textual Illustration)|15 Videos
According to Newton's law of gravitation. Equal forces exerted between earth and apple. The earth attracts an apple, the apple also attract the earth. If it does, why does the earth not 9 move towards the apple ?
Statement-1:When a planet approches the point which is farthest from the sun, its orbital speed decreases. Statement-2: Work done on the planet by the gravitational force exerted by the sun is negative.
A body weight 72 N moves from the surface of earth at a height half of the radius of the earth , then gravitational force exerted on it will be .......
A particle of mass m was transferred from the centre of the base of a uniform hemisphere of mass M and radius R into infinity. What work was performed in the process by the gravitational force exerted on the particle by the hemisphere?
KUMAR PRAKASHAN-GRAVITATION-QUESTIONS PAPER Section - D
