Your friend says that the force that the sun exerts on earth is much larger than the force that earth exerts on the sun. part a
2 answers:
Answer:
<h2>Complete disagree.</h2>Explanation:
The gravity force, according to Newton, is defined as
This definition expresses that a gravitational force is formed by a system of to masses to bodies, the more mass, more force. However, this definition also states that the gravitational force is not different for each mass that is involved. That is, the gravitational force on Earth is the same than the one exerted by the Sun, because such force is formed by the system Sun-Earth.
In addition, the gravitational force is inversely proportional to the distance between the bodies, that is, the more distance, less gravitational force, the less distance, less gravitational force.
Therefore, the right answer here is a complete disagree.
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We have to forces acting on the system (elevator+passengers):
1) The weight (W=5000 N), acting downward
2) The cable's tension (T=6000 N), acting upward
So, the two forces have opposite direction. The resultant (in upward direction) will be
And for Newton's second law, the resultant of the forces acting on the system causes an acceleration on the system itself, given by
where m is the mass of the system.
So, we need to find F and m.
The resultant of the forces is
To find m, we can use the weight of the system. In fact, the weight of an object is given by
where
. Solving for m, and using W=5000 N, we find
and at this point, we can calculate the acceleration of the system (elevator+people):
and the acceleration has the same direction of the resultant force, so upward.
1) The weight (W=5000 N), acting downward
2) The cable's tension (T=6000 N), acting upward
So, the two forces have opposite direction. The resultant (in upward direction) will be
And for Newton's second law, the resultant of the forces acting on the system causes an acceleration on the system itself, given by
where m is the mass of the system.
So, we need to find F and m.
The resultant of the forces is
To find m, we can use the weight of the system. In fact, the weight of an object is given by
where
and at this point, we can calculate the acceleration of the system (elevator+people):
and the acceleration has the same direction of the resultant force, so upward.