Question

Three objects with a mass of 40 kg each are placed in a straight line 50 cm apart .what is the net gravitational force at the centre object due to other two ?

Answer 1

Answer:

Hence net force is balanced as answer is Zero N

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Answer 2

The net gravitational force at the centre object due to the other two will be zero.

Given:

The mass of each object = 40kg

Distance between the objects = 50 cm

The objects are arranged in a straight line.

To Find:

The net gravitational force at the centre object is due to the other two.

Solution:

Let us consider the three objects are A, B and C.

The gravitational force between A and B is $F_1= G\frac{40^{2} }{50^{2} }$

The gravitational force between B and C is $F_2= G\frac{40^{2} }{50^{2} }$

Here we can see $F_1=F_2$

Both the forces acting are in the opposite direction.

Hence, The net gravitational force at the centre object due to the other two will be zero.

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