Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

What is the moment of inertia of a flywheel about an axis perpendicular to it and about it's diameter? In phy tb , pg 171 , it has been given that M.I of a flywheel about its axis = 1/2 MR^2 . About which axis ? 
Is flywheel considered as a disc or a ring ? When it is asked to find the M.I about its axis , which MI should be found , about diameter or perpendicular to the plane ?
Asked by Saravanan | 08 Feb, 2015, 11:17: AM
answered-by-expert Expert Answer
begin mathsize 16px style The space moment space of space inertia space of space straight a space flywheel space about space an space axis space perpendicular space to space plane comma space straight I space equals space MR squared over 2 The space moment space of space inertia space of space straight a space flywheel space about space diameter comma space straight I space equals space MR squared over 4 In space the space text space book space straight M. straight I. space of space flywheel space about space its space axis space is space the space the space straight M. straight I. space of space the space flywheel space about space an space axis space perpendicular space to space the space plane. space straight I space equals space MR squared over 2 The space machines comma space such space as space steam space engine space and space automobile space engine comma space etc. comma space that space produced space rotational space motion space have space disc space with space large space momentum space of space inertia comma space called space straight a space flywheel. Hence comma space flywheel space considered space as space straight a space disc. When space it space is space asked space to space find space straight M. straight I. about space its space axis space which space means comma space we space have space to space find space moment space of space inertia space about space an space axis space perpendicular space to space the space plane. space Or space else space it space would space be space mention space in space the space question space about space any space diameter space we space have space to space find space straight M. straight I. space end style
Answered by Priyanka Kumbhar | 09 Feb, 2015, 12:11: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
three diSc each of mass m and radius r placed in contact with each otheer find moment of inertia
Asked by devanshchauhan325 | 23 Dec, 2022, 07:34: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
If I is the moment of inertia of a solid body having alpha coefficient of linear expansion then the change in I corresponding to a small change in tempt delta T is 
Asked by m.nilu | 29 Nov, 2018, 09:43: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What is the physical significance of moment of inertia?
Asked by Topperlearning User | 11 Aug, 2014, 01:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
How moment of inertia of a body is different from its mass?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
The moment of inertia of a circulating ring passing through its centre and perpendicular to its plane is 400g cm2. If the radius of ring is 5 cm, find the mass of the ring.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Convex and concave lenses of same mass and radius rotate about an axis passing through their centre and perpendicular to the plane. Which one will have greater moment of inertia?
Asked by Topperlearning User | 11 Aug, 2014, 01:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What do you mean by radius of gyration? Is radius of gyration a constant quantity?
Asked by Topperlearning User | 11 Aug, 2014, 01:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Why most of the mass of a flywheel is concentrated at the rim?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What will be the radius of gyration of a thin rod of length l about an axis passing through one of its end and perpendicular to the length?
Asked by Topperlearning User | 11 Aug, 2014, 02:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A solid sphere and a thin spherical shell have same radius. Compare their radius of gyration.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×