Answer
Verified
409.8k+ views
Hint- This is the essential question of chapter gravitation. In some parts of the orbit, force is perpendicular to the direction of motion. Hence, no work done when rotating in circular orbits. Also the total amount of labor in the complete revolution is zero. Because when moving away the component of gravity is opposite to the direction of motion So, negative work is completed. In some parts positive work is completed. As both are symmetrical total work done is zero.
Complete step-by-step answer:
In this above figure we can see that
S- Sun at one of the focus
F,F’- gravitational pull on the planet A and B
v, v’- velocity of planet A and B
At A, \[F \bot v\]but at B, F’ is not \[ \bot \]v
When the gravity is perpendicular to the direction of motion the work exhausted that part is zero. In an elliptical orbit, there are points, for example on the extremes of the foremost axis where this condition is fulfilled.
Hence (B) is true;
(D) isn't true.
At other points, the gravity isn't perpendicular to the motion, so work done won't be zero, so
(A) isn't true.
In one complete revolution, the displacement of the planet is zero, hence the work done is zero,
So (C) is true
Therefore option B and option C are taken into account because the right account subsequently.
Note - Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to every other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
Complete step-by-step answer:
In this above figure we can see that
S- Sun at one of the focus
F,F’- gravitational pull on the planet A and B
v, v’- velocity of planet A and B
At A, \[F \bot v\]but at B, F’ is not \[ \bot \]v
When the gravity is perpendicular to the direction of motion the work exhausted that part is zero. In an elliptical orbit, there are points, for example on the extremes of the foremost axis where this condition is fulfilled.
Hence (B) is true;
(D) isn't true.
At other points, the gravity isn't perpendicular to the motion, so work done won't be zero, so
(A) isn't true.
In one complete revolution, the displacement of the planet is zero, hence the work done is zero,
So (C) is true
Therefore option B and option C are taken into account because the right account subsequently.
Note - Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to every other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Assertion The resistivity of a semiconductor increases class 13 physics CBSE
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
The branch of science which deals with nature and natural class 10 physics CBSE
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Difference Between Plant Cell and Animal Cell
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Fill the blanks with proper collective nouns 1 A of class 10 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
What organs are located on the left side of your body class 11 biology CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
What is pollution? How many types of pollution? Define it