Mechanical Systems Topic 1-3 Review

A wheelbarrow is an example of what simple machine?

• Class 1 lever

• Class 2 lever

• Winch

• Inclined Plane

The Canadarm is an example of what simple machine?

• Class 1 lever

• Class 2 lever

• Class 3 lever

• Class 4 lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In the lever above, the Effort Force is applied in the middle. This makes it a ...

• Class 3 lever

• Class 1 lever

• Class 2 lever

• Class 4 lever

Tags

NGSS.MS-PS2-2

Calculate the mechanical advantage, when 736 N of force is used on a bicycle pedal, causing 81 N of force to move the bicycle forward.

• 917

• 0.11

• 655

• 9.09

Tags

NGSS.MS-PS2-2

A simple machine that converts rotational motion to linear motion is called a ...

• Screw

• Inclined plane

• Class 2 lever

• Wedge

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The science of designing machines to suit people is called ergonomics. The primary criteria used in designing a machine ergonomically is ...

• size

• comfort

• aesthetics

• expense

A device that consists of a small cylinder, with a handle or a crank, is called a ...

• radius

• pinion

• winch

• fulcrum

Gears are used in combination, with the teeth of the gears interlocking, so when one moves the other moves as well. Effort can be applied to the first gear (24 teeth), with the resulting effect on the second gear (12 teeth) being a ...

• speed advantage of 0.5

• speed advantage of 2

• force advantage of 0.5

• force advantage of 2

Tags

NGSS.MS-ETS1-1

When gears are used in a gear train, the resulting effect is that each gear travels...

• slower than the one next to it

• faster than the one next to it

• always in the same direction as the one next to it

• in an opposite direction than the one it is nearest to

If the load is 100kg and the effort required to move it is 25kg, what is the mechanical advantage of the block and tackle pictured?

• 0.25

• 2500

• 4

• not enough information given