
Fruits detached from a tree fall down due to force of gravity. We know that a force arises due to interaction between two objects. Name the objects interacting in this case.
A. Earth and tree
B. Earth and fruit
C. Earth and branch
D. None of the above
Answer
473.7k+ views
Hint: Force of gravity is the attraction force between the earth's mass and other bodies near it. From the gravitational force concept, we know that two masses' gravitational force is directly proportional to their masses' product and inversely proportional to the distance between their centres.
Complete step by step answer:
Let us write the expression for force of gravity between bodies.
\[F = \dfrac{{G{m_1}{m_2}}}{{{r^2}}}\]
Here G is the gravitational constant, \[{m_1}\] is the mass of the first body, \[{m_2}\] is the mass of the second body, and r is the distance between their centres.
In our case, the first body is earth, and the second body is the fruit, so we can say that the force of gravity is directly proportional to the mass of earth and mass of fruit and inversely proportional to the distance between them.
The force due to gravitation is attractive as a result of the earth always attracts the object towards its centre due to which fruit falls.
Therefore, based on the above explanation, we can conclude that the force of interaction is between earth and fruit, and there is nothing to do with the tree.
So, the correct answer is “Option B”.
Note:
We can note the force of attraction between trees and earth is also there, which is directly proportional to the product of their masses and inversely proportional to the distance between their centres. But this force has nothing to do with the gravity force between earth and fruit, so we do not have to consider it while defining the force of gravity when the fruit falls.
Complete step by step answer:
Let us write the expression for force of gravity between bodies.
\[F = \dfrac{{G{m_1}{m_2}}}{{{r^2}}}\]
Here G is the gravitational constant, \[{m_1}\] is the mass of the first body, \[{m_2}\] is the mass of the second body, and r is the distance between their centres.
In our case, the first body is earth, and the second body is the fruit, so we can say that the force of gravity is directly proportional to the mass of earth and mass of fruit and inversely proportional to the distance between them.
The force due to gravitation is attractive as a result of the earth always attracts the object towards its centre due to which fruit falls.
Therefore, based on the above explanation, we can conclude that the force of interaction is between earth and fruit, and there is nothing to do with the tree.
So, the correct answer is “Option B”.
Note:
We can note the force of attraction between trees and earth is also there, which is directly proportional to the product of their masses and inversely proportional to the distance between their centres. But this force has nothing to do with the gravity force between earth and fruit, so we do not have to consider it while defining the force of gravity when the fruit falls.
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