Class 11 Physics Work, Energy, Power and Collision Work Energy Theorem and Conservation of Mechanical Energy

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Correct the following sentence: 'System cannot possess mechanical energy but possesses work.'

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Solution

(N/A) The correct statement is: '$A$ system can possess mechanical energy but cannot possess work.'
Reasoning:
$1$. Energy is a state function,meaning it is a property of the system's state. Therefore,a system can possess internal energy or mechanical energy.
$2$. Work is a path function,not a state function. It represents energy in transit across the boundary of a system due to a force acting through a distance. $A$ system does not 'have' or 'possess' work; it performs work or has work done on it.

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Class 11 Questions

Class 11

Physics Questions

Chapter

Work, Energy, Power and Collision

Subtopic

Work Energy Theorem and Conservation of Mechanical Energy

The adjoining diagram shows the velocity versus time plot for a particle. The work done by the force on the particle is positive from

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$A$ body of mass $1 \text{ kg}$ moves along a straight line with a velocity $v = 2x^2$. The work done by the body during displacement from $x = 0$ to $5 \text{ m}$ is . . . . . . $J$.

DifficultJEE MAIN 2026

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$A$ bullet of mass $m$ enters a wooden block of length $L$ at a speed $v_1$ and emerges out of the block with a speed $v_2$. If $F$ is the average force which impeded its motion through the wooden block, then (Assume uniform deceleration inside the block):

EasyTS EAMCET 2021

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$A$ force acts on a $3\, g$ particle in such a way that the position of the particle as a function of time is given by $x = 3t - 4t^2 + t^3$,where $x$ is in $meters$ and $t$ is in $seconds$. The work done during the first $4\, seconds$ is ................. $mJ$.

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Correct the following sentence: 'System cannot possess mechanical energy but possesses work.'

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The adjoining diagram shows the velocity versus time plot for a particle. The work done by the force on the particle is positive from

The position $x$ of a particle moving in one dimension under the influence of a constant force is given by $t = \sqrt{x} + 3$, where $x$ is in meters and $t$ is in seconds. Find the work done in the first $6$ seconds. (in $\text{ J}$)

$A$ body of mass $1 \text{ kg}$ moves along a straight line with a velocity $v = 2x^2$. The work done by the body during displacement from $x = 0$ to $5 \text{ m}$ is . . . . . . $J$.

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