JEE Main 2021 (3 Aug, Shift 2) Physics Q4: Moment of Inertia

Question

A solid sphere of radius

R

has mass

M

. A rod of mass

m

is attached tangentially to the sphere. What would be the moment of inertia of the system about the axis of the rod, if its diameter is negligibly small compared to

R

?

(1) $MR^2$
(2) $1.4\ MR^2$ Official answer
(3) $1.6\ MR^2$
(4) $4.4\ MR^2$

Official answer

Option 2

NTA final key.

Accepted Answer

Option 2: $1.4\ MR^2$

Answer

$MR^2$

Answer

$1.4\ MR^2$

Answer

$1.6\ MR^2$

Answer

$4.4\ MR^2$

JEE Main 3 August 2021, Shift 2, Physics Q4

Same idea in other shifts