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Conservative And Non-conservative Forces - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

Quick Facts

• 5 Questions around this concept.

Solve by difficulty

A ball of mass m = 3 Kg is being pulled from the ground on a fixed rough hemispherical surface up to the top of the hemisphere with the help of a light inextensible string. Find work (in Joule) done by tension M in the string if the radius of the hemisphere is R = 1 m and the friction coefficient is $\mu = 0.6$

Assume that the block is pulled with negligible velocity

Concepts Covered - 1

Work Done in Conservative and Non-Conservative Field
1. Conservative  field-

• In the conservative field, work done by the force depends only upon the initial and final position.

• In the conservative field, work done by the force does not depend on the path.

• In the conservative field, work done by the force along a closed path is zero.

1. Conservative force-

• The forces of these type of fields are known as conservative forces.

Example: Electrostatic forces, gravitational forces, the spring force

1. Non-Conservative field-

• In Non- conservative field, work done by the force depends on the path followed between any two positions/points.

• In Non-conservative field, work done by the force along a closed path is non-zero.

1. Non-Conservative Force-

• The forces corresponding to Non-Conservative field are known as non-conservative forces.

• Non-Conservative Force is dissipative.

Example: Frictional force, Viscous force

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Work Done in Conservative and Non-Conservative Field

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Books

Reference Books

Work Done in Conservative and Non-Conservative Field

Physics Part II Textbook for Class XI

Page No. : 125

Line : 74