When two waves are moving toward each other, and their crests line up with each other, it results in a wave with greater amplitu
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The magnitude of the gravitational force exerted by ball A on ball B is equal to 36.31 × 10⁻¹¹ N.
<h3>What is gravitational force?</h3>Newton’s law of gravitation can be defined as every particle of matter in the universe attracting every other particle with mass with a certain force. The magnitude of gravitational force has a direct relationship with their masses.
Therefore, the gravitational force between two bodies can be written as:
Where G denotes the universal gravitational constant.
Given, the mass of the Ball A = Ball B = 7 Kg
The separation between the two balls, r = 3 m
The magnitude of the gravitational force applied by ball A on ball B can be determined as:
F = 36.31 × 10⁻¹¹ N
Therefore, the gravitational force is equal to 36.31 × 10⁻¹¹ N.
Learn more about gravitational force, here:
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<u>Answer: </u>
Metal ball will take 0.364 seconds to reach floor.
<u>Explanation: </u>
Initial height from ground = 65 cm = 0.65 meter
We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this the velocity of body in vertical direction = 0 m/s, acceleration =acceleration due to gravity = 9.8 , we need to calculate time when s = 0.65 meter.
Substituting
So it will take 0.364 seconds to reach floor.