1
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
An L-shaped object, made of thin rods of uniform mass density, is suspended with a string as shown in figure. If AB = BC, and the angle made by AB with downward vertical is $$\theta $$, thrown :

JEE Main 2019 (Online) 9th January Morning Slot Physics - Rotational Motion Question 177 English
A
tan$$\theta $$ = $${1 \over {2\sqrt 3 }}$$
B
tan$$\theta $$ = $${1 \over 2}$$
C
tan$$\theta $$ = $${2 \over {\sqrt 3 }}$$
D
tan$$\theta $$ = $${1 \over 3}$$
2
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If the angular momentum of a planet of mass m, moving around the Sun in a circular orbit is L, about the center of the Sun, its areal velocity is :
A
$${L \over m}$$
B
$${4L \over m}$$
C
$${L \over 2m}$$
D
$${2L \over m}$$
3
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A thin circular disk is in the xy plane as shown in the figure. The ratio of its moment of inertia about z and z' axes will be :

JEE Main 2018 (Online) 16th April Morning Slot Physics - Rotational Motion Question 186 English
A
1 : 3
B
1 : 4
C
1 : 5
D
1 : 2
4
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
From a uniform circular disc of radius R and mass 9M, a small disc of radius R/3 is removed as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of disc is : JEE Main 2018 (Offline) Physics - Rotational Motion Question 194 English
A
$${{37} \over 9}M{R^2}$$
B
$$4M{R^2}$$
C
$${{40} \over 9}M{R^2}$$
D
$$10M{R^2}$$
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