Motion Along a Straight Line at Constant Acceleration

1
Learning Objectives

1. To understand Toppling and Toppling due to a slope

Book Reference Pages 102
2
Tilting
When will it fall?
p
3
Going....
p
4
The line of action of the weight has now passed
the pivot
It will now fall over
p
5
Inclined planes Stability
p
?
W
As the angle of the slope increases the line of
action of the weight from the C.o.G. will move
from the mid point of the base towards p. Once it
passes p the object will topple. The maximum
angle of inclination before toppling is when the
weight acts through point P.
6
Inclined planes problem
1.8m
0.8m
?
W
A car has a wheel base of 1.8m and a centre of
mass when unloaded which is 0.8m above the
ground. If the car is tested for stability on an
adjustable slope what is the maximum angle of
inclination before the car topples?
7
Relatively easy.... Question of seeing the
geometry
Tan ? 0.9 / 0.8 ? 48
0.9m
0.8m
?
90 - ?
?
8
Inclined planes problem
What will happen if the car is carrying a full
compliment of passengers? What will happen if
the car has a roof box?