Work, Energy and Power PYQs - Last 5 Years

MHT CET / Physics / Mechanics / 23 recent questions

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All Work, Energy and Power PYQs Last 10 Years Create chapter test

Practice 23 MHT CET Physics questions from Work, Energy and Power. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 5 Years Work, Energy and Power Questions

Showing 23 of 23 filtered questions.

1Work Energy And Power

The spring is initially in unstretched condition. It is first stretched by a length '$x$' and the work done is $W_1$. Then again it is stretched by further length '$x$' when the work done is $W_2$. The value of $W_2$ is given by

2Work Energy And Power

A block of mass 'm' moving on a frictionless horizontal surface collides with a spring of spring constant 'K' and compresses it through a distance 'x'. The maximum momentum of the block after collision is

3Work Energy And Power

A body of mass 1kg begins to move under the action of a time dependent force $\vec{F} = (t\hat{i} + 3t^2\hat{j})\ \text{N}$ where $\hat{i}$ and $\hat{j}$ are the unit vectors along x and y axis. The power developed by the above force at tim...

4Work Energy And Power

A particle of mass $m$ is moving in a circular path of constant radius $r$ such that its centripetal acceleration $a_c$ is varying with time $t$ as, $a_c = k^2 r t^2$. The power delivered to the particle by the forces acting on it is ($K$ =...

5Work Energy And Power

A constant force $\vec{F}=3 \hat{i}-2 \hat{j}-\hat{k}$ newton has a displacement $\vec{r}=2 \hat{i}-3 \hat{j}-3 \hat{k}$ metre in 2 second. The work done and the power are respectively

6Work Energy And Power

A particle is displaced from point $\mathrm{P}(3 \mathrm{~m}, 4 \mathrm{~m}, 5 \mathrm{~m})$ to a point $\mathrm{Q}(2 \mathrm{~m}, 3 \mathrm{~m}, 4 \mathrm{~m})$ under a constant force $\overrightarrow{\mathrm{F}}=(3 \hat{\mathrm{i}}+4 \hat...

7Work Energy And Power

A body of mass 1 kg begins to move under the action of a time dependent force $\overrightarrow{\mathrm{F}}=\left(\hat{\mathrm{t}}+2 t^2 \hat{\mathrm{j}}\right) \mathrm{N}$, where $\hat{i}$ and $\hat{j}$ are unit vectors along $x$ and $y$ ax...

8Work Energy And Power

A stone of mass 1 kg tied to a light inextensible string of length $L=\frac{5}{3} m$ is rotating in a circular path of radius $L$ in a vertical plane. If the ratio of maximum tension in the string to the minimum tension in the string is 3 ,...

9Work Energy And Power

A stone is projected with kinetic energy E, making an angle $\theta$ with the horizontal. When it reaches a highest point, its kinetic energy is

10Work Energy And Power

The potential energy of a long spring when it is stretched by 3 cm is ' $U$ '. If the spring is stretched by 9 cm , potential energy stored in it will be

11Work Energy And Power

A carpet of mass ' $M$ ' made of a material is rolled along its length in the form of a cylinder of radius ' $R$ ' and kept above the rough floor. If the carpet is unrolled without sliding to a radius ' $R / 2$ '. The change in potential en...

12Work Energy And Power

A ball ' $A$ ' is projected vertically upwards with certain initial speed. Another ball 'B' of same mass is projected at an angle of $30^{\circ}$ with vertical with the same initial speed. At the highest point, the ratio of potential energy...

13Work Energy And Power

A simple pendulum of length L has mass m and it oscillates freely with amplitude A. At extreme position, its potential energy is ( $\mathrm{g}=$ acceleration due to gravity)

14Work Energy And Power

The power $(\mathrm{P})$ is supplied to a rotating body having moment of inertia ' I ' and angular acceleration ' $\alpha$ '. Its instantaneous angular velocity ' $\omega$ ' is

15Work Energy And Power

A body of mass 1 kg starts from rest and moves with uniform acceleration. In 2 seconds, its velocity is $10 \mathrm{~m} / \mathrm{s}$. The power exerted on the body in one second is

16Work Energy And Power

If the work done in blowing a soap bubble of volume ' V ' is ' W ', then the work done in blowing a soap bubble of volume ' 2 V ' will be

17Work Energy And Power

For a particle moving in vertical circle, the total energy at different positions along the path [The motion is under gravity]

18Work Energy And Power

A lead bullet moving with velocity ' V ' strikes a wall and stops. If $75 \%$ of its energy is converted into heat, then the increase in temperature is ( $\mathrm{s}=$ specific heat of lead, $\mathrm{J}=$ mechanical equivalent of heat)

19Work Energy And Power

If the momentum of a body of mass ' $m$ ' is increased by $20 \%$ then its kinetic energy increases by

20Work Energy And Power

A stone is projected vertically upwards with speed '\(v\)'. Another stone of same mass is projected at an angle of \(60^{\circ}\) with the vertical with the same speed '\(v\)'. The ratio of their potential energies at the highest points of ...

21Work Energy And Power

Using variation of force and time given below, final velocity of a particle of mass \(2 \mathrm{~kg}\) moving with initial velocity \(6 \mathrm{~m} / \mathrm{s}\) will be

22Work Energy And Power

If a lighter body of mass '\(\mathrm{M}_1\)' and velocity '\(\mathrm{V}_1\)' and a heavy body (mass \(M_2\) and velocity \(V_2\) ) have the same kinetic energy then

23Work Energy And Power

A ball of mass '\(\mathrm{m}\)' is dropped from a height '\(\mathrm{s}\)' on a horizontal platform fixed at the top of a vertical spring. The platform is depressed by a distance '\(h\)'. The spring constant is ( \(\mathrm{g}=\) acceleration...