Work & Simple Machines II: Question Preview (ID: 1362)

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Which is NOT an example of a complex machine?
a) a bicycle
b) a hand drill
c) a pencil sharpener
d) a broom

To puncture a can, a can-opener relies on a sharp wedge. The wedge is a variation of which simple machine?
a) pulley
b) lever
c) wheel and axle
d) inclined plane

Which of the following simple machines is used to help the can-opener revolve around the top of the can while opening it?
a) lever
b) lever
c) wheel and axle
d) pulley

Because it uses several simple machines to complete its task, the can opener can be referred to as what?
a) a combination machine
b) a utility machine
c) an advanced or super machine
d) a complex or compound machine

Which type of simple machine is a hammer?
a) pulley
b) screw
c) wheel
d) lever

The fixed point that a lever pivots around is called the
a) axle.
b) fulcrum.
c) gear.
d) pulley.

If a load is too heavy to push up an inclined plane, which of the following reccommendations could you make to help?
a) Use a shorter, steeper ramp.
b) Use a single, fixed pulley to lift the load.
c) Drag the load up the ramp in a box without wheels.
d) Use a longer, gradual ramp.

Which of the following tools can be used to measure the force used to lift an object?
a) triple-beam balance
b) springometer
c) gravitron
d) spring scale

Which simple machines are parts of a wheel barrow?
a) lever and pulley
b) wedge and wheel & axle
c) wheel & axle and lever
d) lever and wedge

Which of the following is NOT a simple machine that uses a pulley or pulley system?
a) flag pole
b) crane
c) slide
d) sail on a sailboat

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