Trumpeter A holds a B-flat note on the trumpet for a long time. Person C is running towards the trumpeter at a constant velocity
2 answers:
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Answer:
g' = g/4
Explanation:
- The value of the free-fall acceleration at the surface of the earth, can be obtained applying Newton's 2nd law, assuming that the only force acting on an object at the surface of the earth, is the one produced by the mass of the Earth, i.e. gravity.
- This force can be expressed according the Newton's Universal Law of Gravitation , as follows:
- From Newton's 2nd Law, we have:
- Since the left sides in (1) and (2) are equal each other, both right sides must be equal each other also.
- Simplifying the mass m, we can write the acceleration a in (2) as the acceleration due to gravity, g, as follows:
- Since G is an universal constant, and the mass mE remains constant, if we double the radius of the Earth, the new value for the acceleration due to gravity (let's call it g'), is as follows:
As per Newton's 2nd law
we know that
it is product of mass and acceleration
here we know that
also we know that
so from above equation we have
so the force here will be 10020 N