Why can we assume that the tension is the same on both ends of the string?
The tension acting on the string on points A and B would be the same. Why? Because it is the same string acting and there is no force pulling or pushing the string in either direction to make a change. So, the tension in points A and B are of the same value.
Is the tension in a rope always the same?
The tension in the rope is constant if its force does not have to be used to accelerate anything else, including itself. Therefore, if it has negligible mass and is held taut between two points, the tension will be considered constant throughout.
Is tension the same on both ends of a rope?
Explanation: The rope experiences the same pulling force on both sides, and therefore it is in a state of static equilibrium (i.e. it is at rest consequently has a net force of zero). Newton’s third law states that every force occurs as a member of an action/reaction pair of forces.
Why is tension the same everywhere in a rope?
Since we observe that a tense rope is stationary and completely still then it must be that every small piece of the rope has a zero net force. Thus, the pull on the left will propagate, without loss, through the length of the rope. And the tension is thus the same everywhere.
Is the tension in the rope the same on both sides of the pulley?
Pulley: A pulley serves to change the direction of a tension force, and may also (in the case of multiple-pulley systems) change its magnitude. The tension of an “ideal cord” that runs through an “ideal pulley” is the same on both sides of the pulley (and at all points along the cord).
Why are tension forces equal?
What is Tension Force Equal to? The system has a constant velocity and there is an equilibrium because the tension in the cable/string, which is pulling up the object, is equal to the weight force, i.e. mg. where m is a mass and g is the acceleration caused by the gravity which is pulling down the object.
Why does a pulley with mass have a rope passing over it with two different tensions at its ends?
It can be understood as follows that the tensions in the strings at both ends are different because of friction between the strings and pulley which is enabling the pulley to rotate along with the string.