How was Einstein's theory that energy and mass are interchangeable eventually proven to be correct?
1 answer:
Answer:
Stanley Eddington confirmed the theory by his observations and inferences using the solar eclipse
Explanation:
Albert Einstein proposed a theory that energy and mass are interchangeable; termed the theory of special relativity. This can be observed when an object moves with the speed of light. The theory states that all laws in physics are the same for all non-accelerating observers.
Thus,
E = m
This theory could not be proven over many years, therefore it was not fully accepted.
In 1919, Stanley Eddington confirmed the theory by his observations and inferences using solar eclipse. The theory is now very accurate at any given speed when gravitational force tends to zero. This has lead to other observations to prove Einstein's theory.
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Explanation :
Work is done when a force is applied to create a displacement on an object.
Thus, the work done depends on the two factors i.e.
(1) Applied force (F)
(2) Distance or displacement (d)
Mathematically, work done is
It also depends on the angle between the force and the displacement.
For example,
A person carries a weight of 20 kg and lifts it on his head 1.5 m above the surface. So, the work done by him on the luggage will be:
or
So,
Hence, the work done by him on the luggage is 294 Joules.