Question

Moi square plate of mass m and edge l about axis in the plane of plate and passing through one of its vertex making an angle 15 degree with the horizontal is?

Answer 1

x is parallel to given axis.

o is the centre of square, so AO is the half of its diagonal.

so, AO=

2

L

AE is the perpendicular distance of x axis from given axis.

So, △AOE is a right angle triangle.

AE=r=AOcos30

o

r=

2

L

.

2

3

=

2

2

3

L