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proyasha
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Homework Statement
will a body necessarily remain at rest if the net force acting on it is zero?give a reason for ur answer...and I've just passed my ninth grade so if u cud please it to me explain at that level...
proyasha said:will a body necessarily remain at rest if the net force acting on it is zero?
Google_Spider said:It will have a constant velocity. If it was initially at rest, it will be at rest. If it was moving with a certain velocity, it will continue moving with the same velocity.
princesspriya said:it would not always mean it will be at rest because it can also be moving at constant velocity since the definition of force is something that would change the velocity of an object therefore making it accelerate but if the net force is zero then it could either be moving at constant velocity or be at rest since there is no acceleration.
physixguru said:Of course Aristotle's assumption was wrong.
proyasha said:can you give an everyday example to support the answer?
physixguru said:Answer me this first.
If Newton was correct then why does the Earth revolve around the sun? The gravitational pull of the sun makes the Earth go about it.But this contradicts Newton's law that a force is not necessary to keep a body in motion? :p
Answer me the logic behind this phenomenon.I am not making a statement.I am asking a question.
Net force is the overall force acting on an object, taking into account both magnitude and direction. It is the sum of all the individual forces acting on the object.
Net force is calculated by adding together all the forces acting on an object in a given direction. If the forces are acting in opposite directions, the net force is found by subtracting the smaller force from the larger one.
Net force is directly related to the motion of an object. If the net force acting on an object is zero, the object will remain at rest or continue moving at a constant velocity. However, if the net force is not zero, the object will accelerate in the direction of the net force.
The greater the mass of an object, the more force is needed to accelerate it. This means that a larger net force is required to cause the same amount of acceleration in an object with a greater mass compared to an object with a smaller mass.
Some examples of net force and motion in everyday life include a ball rolling down a hill due to the force of gravity, a car accelerating on a flat road due to the engine's force, and a book staying in place on a table due to the force of friction.