Can someone explain these to me? I thought the first one was the earth because o
ID: 1312625 • Letter: C
Question
Can someone explain these to me? I thought the first one was the earth because of its heavier mass, the second was false and the third was also false but I don't think I'm understanding it.
A satellite is in orbit around the earth. Which one feels the greater force?
T/F: If the rockets of a spaceship in outer space (away from all gravity) suddenly lose power and go off, the space ship will gradually slow to a stop.
T/F: In order to get an object moving, you must push harder on it than it pushes back on you.
Explanation / Answer
1. Here both of them will be feeling the same force. As force, F = (G* M1* M2) / (R^2)
The force experienced is independent of individual masses and depends on the product of both the masses. The acceleration experienced by them will be different and will be inversely proportional to their masses.
2. True.
Here, as the spaceship is free from gravity there is no force experienced on it. Also, since it lose power and went off, the spaceship has to come to stop gradually as there is no force experienced by them.
3. False.
Here, you have to push the object by the same force as it pushes you to get it moving. Newtons third law of motion applies here. The object will be pushing you back nby the same force as you push it. Every action will be having an equal and opposite reaction.