MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Work Done in Different Frames of Reference

If a person i...

Question

If a person is pushing a box inside a moving train, the work done in the frame of earth will be:
${\to S}_{0} =$ displacement of the train relative to ground.
$\to S =$ displacement of the box w.r.t. train.

A

Zero

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

\to F . (\to S + {\to S}_{0})

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

\to F . \to S

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

\to F . {\to S}_{0}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $\to F . (\to S + {\to S}_{0})$
Work done in frame of earth,
$W = \to F . {\to S}_{g}$
where,
${\to S}_{g} =$ displacement of the box w.r.t ground.
$∴$ According to question,
$\to S = {\to S}_{g} - {\to S}_{0}$
$\Rightarrow {\to S}_{g} = (\to S + {\to S}_{0})$
$∴$ Work Done $= \to F . (\to S + {\to S}_{0})$

Suggest Corrections

thumbs-up

0

Similar questions

Q. If a person is pushing a box inside a moving train, the work done in the frame of earth will be:

{\to S}_{0} =

displacement of the train relative to ground.

\to S =

displacement of the box w.r.t. train.

Q. A ball is thrown vertically upwards (relative to the train) in a compartment of a moving train. The face of the person sitting inside the compartment is towards engine of the train.

Q. Assertion :A person seated in a moving train is a rest with respect to another train moving in the opposite direction. Reason: If the train covers equal displacement in equal intervals of time then it moves with uniform acceleration.

Q. A train is moving along a straight line with a constant acceleration. A boy standing inside the train throws a ball in forward direction with a speed of

10 m/s

60^{\circ}

to the horizontal, with respect to himself. The boy has to move forward by

1.15 m

inside the train to catch the ball (at the initial height). Then,
[Take

g = 10 {m/s}^{2}

Q. A ball is thrown vertically upward (relative to the train) in a compartment of a moving train (train is moving horizontally). Then, choose the correct option(s):

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

So You Think You Know Work?

PHYSICS

Watch in App

explore_more_icon

Explore more

Work Done in Different Frames of Reference

Standard XI Physics

Join BYJU'S Learning Program

CrossIcon