Question

What is the difference between extended object and point object in angular momentum?

Answer 1

Answer:

extended object might have different angular momentum from a fixed reference point

Explanation:

for a fixed reference point as says origin ,if a point object or extended object lies on axis than for point object angular momentum should be zero , while for extended object if have 3 dimensions it will have a angular momentum on symmetrical axis

let's understand by an example :-

a constant force acting toward x -axis

a point object on x-axis will have zero angular momentum as l = r (perpendicular distance from axis) × force on body.

while if a cylinder on x - axis with symmetrical axis perpendicular to it it's top and bottom point will have a angular momentum as respect to its centre.