﻿ A bob of mass 0·1 kg, hung from the ceiling of a room by a string 2m long, is set into oscillation. The speed of the bob at its mean position is 1 m/s. What is the trajectory of the bob if the string is cut when the bob is:(a) at one of its extreme positions?(b) at its mean position? from Physics Motion in A Plane Class 11 Manipur Board

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A bob of mass 0·1 kg, hung from the ceiling of a room by a string 2m long, is set into oscillation. The speed of the bob at its mean position is 1 m/s. What is the trajectory of the bob if the string is cut when the bob is:
(a) at one of its extreme positions?
(b) at its mean position?

The trajectory of the bob is,

(a) Straight line,

(b) Parabola.
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Mass, temperature and energy
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What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors.

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What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
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Give three examples of vector quantities.

Force, impulse and momentum.
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What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
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