Centre of mass practical (3.2)

Question 1

How do you find the centre of mass of an irregular object?

Answer 1

1) hand the object freely from a point
2) Using a plumb bob and pen, draw a vertical line directly down the object
3) Repeat two more times
4) The centre of mass is where the lines cross

Question 2

What equipment is needed to find the centre of mass of an object?

Answer 2

Marker, string, clamp stand, plumb bob