Yes.
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Two astronauts floating weightlessly towards each other inside the Space Station, for instance. If one astronaut pushes the other away, both astronauts will move away from each other. Only if the one pushing had his or hers feet firmly against the side of the Station, would only one be pushed away.
Yes, it is true that a magnet is an object that can exert force on another material. However, it will only exert that force if it is made out of the correct material. Items made of iron are the most common magnetic objects.
opposite and equal force against you.
Any object is weightless.
When the gravitational force is 0.
do you exert more force when you are further from the fulcrum
The objects with bigger masses exert more pulling force. However, even though all the matter around us exert a force, their masses are too small for them to exert a 'feelable' force. But yes, they do exert a force, but its negligible.
The force that you exert on a lever can be called the effort force. The lever has three parts. They are: the fulcrum, the load, and the effort force. This can also be classified as the input force. The force that you exert to perform a task is known as the input force.
The person in space exerts a force of 850 N on the earth. The fact that the person is weightless has no bearing on this question. Ever since Newton enunciated his three laws of motion we have known that action and reaction are equal and opposite. If the earth pulls him with 850 N, then he pulls the earth with 850 n.
Weightless
input force
because they love each other
because they love each other