centre of gravity

Question 1

whats the centre of gravity in a object

Answer 1

is the point through which the entire weight of that object may be thought to act

Question 2

for regular shaped objects where is the centre of gravity

Answer 2

at the centre of an object

Question 3

whats a example of a neutral equilibrium

Answer 3

a ball sitting on a bench

Question 4

what is a neutral equilibrium

Answer 4

is the state in which a slight displacement causes the object neither to move very far from its original position nor return to it

Question 5

whats a unstable equilibrium

Answer 5

is a state in which a slight displacement causes the object to move a long way from its original position

Question 6

whats a example of unstable equilibrium

Answer 6

a pencil balanced on its end, a tall radio mast

Question 7

whats a stable equilibrium

Answer 7

is a state in which a slight displacement causes the object to return to its original position

Question 8

whats a example of a stable equilibrium

Answer 8

a traffic cone standing on its wide base, a car on a road

Question 9

for maximum stability what should the gravity be like

Answer 9

the centre of gravity should be low as possible
the area of the base should be as large as possible

Question 10

what is gravity often linked to

Answer 10

with out notion of stability and equilibrium

Question 11

where is the centre of gravity on a rectangle

Answer 11

at its geometric centre ( the point where its diagonals cross)

Question 12

why are tractors created with big wheel base

Answer 12

to allow farmers to plough steeply sloping ground safely