the angular frequency of a fan increases from 30 rpm to 60 rpm in πs.a dust particle is present on the blades at a distance of 20 cm from axis of rotation. the net acceleration of dust particle at the end of πS is
Answers
Answer:
The angular frequency of a fan increases from 30rpm to 60rpm in πs . A dust particle is present on the blades at a distance of 20cm from axis of rotation. The net acceleration of dust particle at the end of πs is
Solution
verified
Verified by Toppr
Correct option is
B
7.9ms
−2
Final velocity after πs is,
v=
60
60×2π×0.2
v=0.4π
Net acceleration after πs is,
a=
r
v
2
a=
0.2
(0.4π)
2
a=
0.2
9.87×0.16
a=7.9m/s
2
Was this answer helpful?
upvote
11
downvote
1
SIMILAR QUESTIONS
star-struck
In the given figure, a smooth parabolic track lies in the vertical plane (x−y) the shape of track is defined by equation y=
a
x
2
where a is a constant. A ring of mass m which can slide freely on wire track, is placed at the position (a,a). The track is rotated with constant angular speed ω such that there is no relative slipping between the ring and the track then ω is equal to
693341
expand
Hard
View solution
>
A wheel of radius R rolls on the ground with a uniform velocity v. The relative acceleration of topmost point of the wheel with respect to the bottom most point is