A body is released from position $A$ as shown in figure. The speed of body at position $B$ is

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Important Questions on Work, Energy and Power

MEDIUM

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 18

A chain of mass

2 kg

is placed on a smooth table with

\frac{1}{4}

th of its length hanging over the edge. If the length of chain is

4 m

then the work done in pulling the hanging portion of the chain back to the surface of the table is

HARD

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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 19

If momentum of a body is decreased by

50 %,

then kinetic energy will be decreased by

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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 20

Internal force cannot change

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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 21

Select correct statement regarding stable equilibrium.

EASY

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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 1

A force $\vec{F} = (3 \vec{i} + 4 \vec{j}) N$ Acts on a particle moving in $x - y$ Plane. Starting from origin, the particle first goes along $x$ -axis to the point $(4, 0) m$ And then parallel to the $y$ -axis to the point $(4, 3) m .$ The total work done by the force on the particle is