the particle is revolving uniformly at 170 rad s-¹ is brought to the rest by a uniform angular retardation of
5 rad s-²
find the time required to stop
Answers
Answered by
101
The particle is in circular motion and we have the different quantities like Initial & Final angular velocity, angular acceleration.
- Initial angular velocity = 170 rad/s
- Final angular velocity = 0 m/s
- Angular acceleration = -5 rad/s²
We have to find the time required to stop the p.
━━━━━━━━━━━━━━━━━━━━
By using 1st equation of motion,
Putting the values of w, w0 and :
⇛
⇛
Dividing 5 from both sides to get t
⇛
Thus the time taken by the particle to stop with the given quantities is 34 s. And we are done...
amitkumar44481:
Perfect :-)
Answered by
74
Given:
- Initial angular velocity = ω°= 170rad/ sec
- Final angular velocity = ω = 0 rad/sec
- Angular acceleration =
━━━━━━━━━━━━━━
Need to find:
- What's the time it needs to stop ?
━━━━━━━━━━━━━━━━━
Solution:
We know,
Now putting values we get
Thus the time required is
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