how does a lever help us to lift things? On what kind of surface would a ball roll fastest?

the less friction a surface has the faster the ball will roll down an incline or if it is pushed. a lever helps you lift because the force in which you push down on the lever is multiplied by the number of units in which the opposite side is. That factor of force times distance is the force that lifts the object on the opposite side

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One Response to “how does a lever help us to lift things? On what kind of surface would a ball roll fastest?”

Slovakmath on October 26th, 2009 at 12:16 pm

the less friction a surface has the faster the ball will roll down an incline or if it is pushed. a lever helps you lift because the force in which you push down on the lever is multiplied by the number of units in which the opposite side is. That factor of force times distance is the force that lifts the object on the opposite side
References :
I’m sure "HowStuffWorks.com" has a good explanation of how levers work in more detail

Roll On