Work = Force * Distance

1
Work Force Distance

• Work 5 6 30 Foot Pounds

2
Work Force Distance
3
Work Force Distance
4
Work Force Distance
5
A spring of natural length
6
If it takes 3 to hold the spring two feet
beyond its natural length

• F(x) kx
• F(2) k2 3
• K 3/2 thus F(x) 3/2 x

7
How much work was done in pulling that spring to
two feet beyond its natural length?

• Work is the area of the green region.

8
How much work was done in pulling that spring two
additional feet?

• Work is the area of the green area.