Physics Simple Machines

how does a machine change the amount of work done?

• it depends on the machine

• a machine doesn't change the amount of work done

• it doubles the amount of work done

• it makes less work being done

a machine changes the _____ of a force applied

• direction

• size

• distance

• any of the above

Tags

NGSS.MS-ETS1-1

mechanical advantage measures...?

• how much the machine multiples the force

• how the direction changes

• the friction created

• the distance

Tags

NGSS.MS-ETS1-2

How does the input force and input distance of a machine relate to each other?

• they are always doubled

• they don't relate in any way

• they are directly proportional

• they are inversely proportional

For which of the following machines is the output force less then the input force?

• screw

• inclined plane

• 3rd class lever

• pulley

Which is most closely related to a lever?

• wheel and axle

• pulley

• screw

• inclined plane

What determines mechanical advantage of a pulley system?

• the force applied when you pull

• width of the rope

• number of rope segments

• where you pull on the rope

Tags

NGSS.MS-ETS1-2

What is the difference between ideal and real world machines?

• ideal creates more work

• there is no diffrence

• there isn't friction in an ideal machine

• real world machine creates work

Mechanical Advantage of 1st-Class lever is..?

• depends on the fulcrum

• 1

• 1>

• 1<

Which is true about a real-world machine

• doesn't do useful work

• does more useful work then as put in

• does the same amount of useful work as put in

• does less useful work then put in

Tags

NGSS.HS-PS3-3