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ASSIGNMENT
The bucket at the front of a tractor is used to push fence posts down into the ground
shown in Figure 20.
3.
bucket
tractor
fence post
Figure 20
(a)
The area of each post in contact with the ground is 100 cm2. When the bucket pushes
a post, the downward force from the post on the ground is 6 500 N.
Calculate the pressure that the post exerts on the ground. State the unit.
Pressure = force (Ni
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