Centre of mass

Question 1

what is the centre of mass of an object

Answer 1

the point at which the mass may be thought to be concentrated

Question 2

what does the centre of mass lie in symmetrical objects

Answer 2

along the line of symmetry

Question 3

where will the com be when an object has more than one line of symmetry

Answer 3

where the lines of symmetry intersect

Question 4

where will the com be of a suspended object

Answer 4

directly below the point of suspension

Question 5

how can the com of an irregular shape be found

Answer 5

hang shape from point and a plumb line is used to draw a vertical line downwards from pivot

repeat from dif points

Question 6

what is the stability of an object affected by

Answer 6

the width of the base of the object, height of its centre of mass

Question 7

when will an object topple over

Answer 7

when the line of action is within the base

Question 8

what are the 3 types of equilibrium when a force is applied to objects

Answer 8

stable equilibrium - tilts and falls back to og position

unstable equilibrium- tilts and falls

natural equilibrium- rolls

Question 9

what happens to the com when a stable object is tilted

Answer 9

it is raised

Question 10

what happens to the com when a stable object is tilted

Answer 10

it is lowered

Question 11

what happens to com when a natural object is tilted

Answer 11

it stays at same lvl if pushed