Making Machines Flashcards

1
Q

Ancient mill

A

Multiple force, a handle allows a heavy wheel to be turned within a channel

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2
Q

Trebuchet , catapult and balista

A

Multiplies distance, created by the Chinese around the 4th century bc for weaponry

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3
Q

Archimedes’ screw

A

Multiples force, made to help farmers lift water to a higher point at the Nile

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4
Q

Archimedes’ defence tip boat

A

Multiples force invented as a sea defense

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5
Q

Levers and moments

A

Archimedes once said that with a large enough lever he could use only a small effort to lift a load as big as the earth

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6
Q

Moments

A

Moment (Ncm or Nm) = force (n) x distance (m or cm ) distance is the distance from the pivot

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