THE BULLDOZER

SIMPLE MACHINES INCLUDED

• Wheel and axle to turn the treads
• Lever to lift the shovel
• Wedge as the shovel
• A bolt as a screw
• There are pulleys in the engine

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FORCES THAT ACT AGAINST IT

• Gravity pulling down on it
• The wheel and axle and other parts creates friction

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Gravity and lift
of the ground and the bulldozer
are even. Push is stronger
than
friction. Lift of the lever is
stronger than
gravity.
Gravity acts from a distance. Everything else is from contact

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