﻿ Two identical charged spheres suspended froma  common point by two massless strings of lengths l, are initially at a distance d (d<< l) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velcoity v. Then, v varies as a function of the distance x between the sphere, as from Physics Motion in Straight Line Class 11 Manipur Board

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Motion in Straight Line

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Two identical charged spheres suspended froma  common point by two massless strings of lengths l, are initially at a distance d (d<< l) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velcoity v. Then, v varies as a function of the distance x between the sphere, as

• vx

• vx-1

B.

Two identical charged spheres suspended from a common point by two massless strings of length L.

In ,

The charge begins to leak from both the sphere at a constant rate. As a result, the spheres approach each other with velocity v.

Therefore, equation (i) can be rewritten as,

Two identical charged spheres suspended from a common point by two massless strings of length L.

In ,

The charge begins to leak from both the sphere at a constant rate. As a result, the spheres approach each other with velocity v.

Therefore, equation (i) can be rewritten as,

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What is motion?

When an object changes it's position with time, with respect to it's surroundings, the object is said to be in motion.
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What is the most essential thing to study the motion of a body?

The most essential thing to study the motion is reference frame. Rest and motion are relative terms. It means that an object in one situation can be in rest but in another situation, the same object will be in motion.
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Is absolute rest or absolute motion possible?

Absolute rest and absolute motion is not possible because there is no point in the universe which is at rest and can be taken as point of reference. The planet Earth is in continuous motion.
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Can a body be always at rest in some frame?

Yes, a body is always at rest in a frame which is fixed with the body itself.
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What is rest?

When an object does not change its position with time, with respect to it's surroundings. In such a case the object is said to be at rest.
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