Home
Class 11
PHYSICS
A body rotates about a fixed axis with a...

A body rotates about a fixed axis with an angular acceleration of `3 rad//s^(2)` . The angle rotated by it during the time when its angular velocity increases frm 10 rad/s to 20 rad/s (in radian) is

A

50

B

100

C

150

D

200

Text Solution

Verified by Experts

The correct Answer is:
A
Given, `alpha=3 "rad s"^(-2),omega_(1)=10 "rad s"^(-1),omega_(2)=20 "rad s"^(-1)`
Angle, `theta=(omega_(2)^(2)-omega_(1)^(2))/(2alpha)=((20)^(2)-(10)^(2))/(2xx3)=50` rad.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ROTATION

    DC PANDEY ENGLISH|Exercise Check point 9.2|20 Videos

  • ROTATION

    DC PANDEY ENGLISH|Exercise Check point 9.3|15 Videos

  • ROTATION

    DC PANDEY ENGLISH|Exercise (C) Chapter Exercises|39 Videos

  • RAY OPTICS

    DC PANDEY ENGLISH|Exercise Integer type q.|14 Videos

  • ROTATIONAL MECHANICS

    DC PANDEY ENGLISH|Exercise Subjective Questions|2 Videos

Similar Questions

Explore conceptually related problems

A body rotates about a fixed axis with an angular acceleration 1rad//s^(2) through what angle does it rotates during the time in which its angular velocity increases from 5rad//s to 15rad//s ?

A body rotates about a fixed axis with an angular acceleration of one radian/second/second. Through what angle does it rotate during the time in which its angular velocity increases from 5 rad/s to 15 rad/s.

A wheel is rotating with an angular velocity of 3 rad s^(-1) . If the angular acceleration is 2 rad s^(-1) then calculate its angular velocity after 5 second.

A wheel is rotating with an angular velocity of 3 rad s^(-1) . If the angular acceleration is 2 rad s^(-1) then calculate its angular velocity after 5 second.

What is the angular acceleration of a particle if the angular velocity of a particle becomes 4 times of its initial angular velocity 1 rad s in 2 seconds

What is the angular acceleration of a particle if the angular velocity of a particle becomes 4 times of its initial angular velocity 1 rad s in 2 seconds

A disc rotating about its axis, from rest it acquires a angular speed 100rev/s in 4 second. The angle rotated by it during these seconds (in radian ) is :-

A wheel has angular acceleration of 3.0 rad//s^2 and an initial angular speed of 2.00 rad//s . In a time of 2 s it has rotated through an angle (in radian) of

A wheel has angular acceleration of 3.0 rad//s^2 and an initial angular speed of 2.00 rad//s . In a time of 2 s it has rotated through an angle (in radian) of

A wheel initially has an angular velocity of 18 rad/s. It has a costant angular acceleration of 2 rad/ s^2 and is slowing at first. What time elapses before its angular velocity is 22 rad/s in the direction opposite to its initial angular velocity?

Home
Profile