Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
JEEMAIN and NEET
>>
Physics
>>
Class11
>>
System of Particles and Rotational Motion
If the moment of inertia of a disc about an axis tangential and parallel to the surface is I.Then find the moment of inertia about the axis tangential but perpendicular to the surface in terms of the I?
\[\begin {array} {1 1} (a)\;\frac{6}{5}\;I & \quad (b)\;\frac{3}{4}\;I \\ (c)\;\frac{3}{2}\;I & \quad (d)\;\frac{5}{4}\;I \end {array}\]
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
Share
asked
Nov 25, 2013
by
meena.p
retagged
Jul 10, 2014
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
Parallel axis theorem:
http://clay6.com/mpaimg/jee%205%20n%2018.JPG
$I= \large\frac{MR^2}{4}$$-MR^2$
$\quad= \large\frac{5}{4}$$MR^2$
http://clay6.com/mpaimg/1_jee%205%20n%2018-1.JPG
$I= \large\frac{MR^2}{2}$$+MR^2$
$\quad= \large\frac{3}{2}$$MR^2$
$I'= \large\frac{5}{4} \times \frac{4}{5} \bigg(\frac{3}{2}\bigg)$$MR^2$
$\qquad= \large\frac{6}{5}$$I$
answered
Nov 26, 2013
by
meena.p
Please
log in
or
register
to add a comment.
Related questions
A solid sphere of mass M, radius R and having moment of inertia about an axis passing through the centre of mass as I, is recast into a disc of thickness t, whose moment of inertia about axis passing through its edge and perpendicular to the plane remains I. Then, radius of the disc will be
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
From a disc of mass M and radius R, a smaller disc of radius $\large\frac{R}{2}$ is cut out as shown. The moment of inertia of the remaining portion about an axis through the centre 0 and perpendicular to the plane of the disc is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
Moment of inertia of a portion of a disc about an axis perpendicular to its plane; Mass of the object is M and radius R is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
A uniform triangular plate of mass m whose vertices are ABC and has length $l, \frac{l}{2}$ and $\large\frac{l}{\sqrt 2}$. Find the moment of inertia of this plate about an axis passing through the point B and perpendicular to the plane of the plate
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
A thin rod of length l and mass m is turned at mid- point 0 at an angle of $60^{\circ}$ . The moment of inertia of the rod about an axis passing through 0 and perpendicular to the plane of the rod will be
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
Moment of inertia of a uniform rod of length L and mass M, about an axis passing through $L/4$ from one end and perpendicular to its length is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
Moment of inertia of a rectangular plate about an axis passing through its centre and perpendicular to its plane
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...