Topic 4-6 Mechanical Systems

Which of the statements is true?

• The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.
• The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.
• The bottom of the shoe exerts the same pressure as the bottom of the boot.

Tags

NGSS.MS-PS2-1

If the horse reared up on 2 legs what effect would it have on the pressure?

• it will exert half the pressure it did before
• it will exert the same pressure it did before
• it will exert twice the pressure it did before
• it will exert four times the pressure it did before

Tags

NGSS.MS-PS2-2

Where is pressure the greatest on the dam?

• D
• C
• B
• A

Tags

NGSS.MS-ETS1-1

Look at the pressure triangle. How do we calculate the area?

• f ÷ a
• f x p
• p x f
• f ÷ p

Look at the pressure triangle. How do we calculate the force?

• f ÷ a
• f x p
• p x a
• f ÷ p

Tags

NGSS.MS-PS2-2

Pressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2

• True
• False

Pressure is measured in what units

• Newtons
• m/s
• Pascals
• Moles

Hydraulic devices transmit power using

• an incompressible fluid

• a compressible fluid

• an incompressible gas

• a compressible gas

Pneumatic devices transmit power using

• an incompressible fluid

• a compressible fluid

• an incompressible gas

• a compressible gas

Which describes an advantage of hydraulic systems?

• A hydraulic system is has super quick motion.

• A hydraulic system never leaks.

• A hydraulic system has a large mechanical advantage and is easy to control.

• A hydraulic system can be widely used in the food packing industry.