A man goes at the top of a smooth inclined plane. He releases a bag to fall freely and himself slides down on inclined plane to reach the bottom.
in Physics
23 views
2 Votes
2 Votes

A man goes at the top of a smooth inclined plane. He releases a bag to fall freely and himself slides down on inclined plane to reach the bottom. If $u_{1}$ and $u_{2}$ are the respective velocities of the man and bag at the bottom of inclined plane, then

(a) $u_{1}>u_{2}$

(b) $u_{1}<u_{2}$

(c) $u_{1}=u_{2}$

(d) $u_{1}$ and $u_{2}$ cannot be compared

in Physics
by
4.3k Points

1 Answer

1 Vote
1 Vote
 
Best Answer

The correct option of this question will be (C).

Solution —

The gravitational force is a conservative force, so the work done by it is independent of path. Hence in both cases

$\frac{1}{2} m u^{2}=m g h$

where $h$ is the height of the inclined plane. or $u=\sqrt{2 g h}$

Clearly, it is independent of mass.

$\mathrm{So}, u_{1}=u_{2}$

by
4.3k Points

Related Questions

0 Votes
0 Votes
1 Answer 21 Views

Welcome To Informesia

Informesia Helps You To Prepare India's All States Board Exams (CBSE, ICSE, UP Board, BSEB, HPBOSE, RBSE, MSBSHSE) and Competitive Exam Like JEE (Main + Advanced), AIIMS, NEET, KVPY, NTSE, BITSAT, Olympiad, CLAT...etc.
For Any Query or Suggestion, Please Contact us on :
[email protected]

Connect us on Social Media