The C.G. of a circle is at its center

The C.G. of a triangle is at the intersection of its medians

The C.G. of a rectangle is at the inter-section of its diagonals

The C.G. of a semicircle is at a distance of r/2 from the center

r/2

2r/3

r/A

3r/2

reaction of any smooth surface with which the body is in contact

reaction of a rough surface of a body which rolls on it without slipping

reaction at a point or an axis, fixed in space, around which a body is con-strained to turn

all of these

maximum

minimum

zero

infinity

20 kg, - ve sense

10 kg, - ve sense

20 kg, + ve sense

10 kg, + ve sense