Gears/Ratios + Simple Machines

What is the mechanical advantage of a lever with an effort (input) arm of 5 meters and a load (output) arm of 1 meter? MA=Fo/Fi

• 1

• 5

• 0.2

• 10

A pulley system has 3 supporting ropes holding up the load (weight of the object).

What is the mechanical advantage of this system? *Hint: Look at the number of ropes holding the weight!

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

You are in need of moving something really heavy (high weight) across a floor. What can you do in order to move it the most efficient way?

• Increase the friction of the floor

• Put it on wheels to move it (decreases friction)

• Increase the friction of the wheel

• Slide it across the floor

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the mechanical advantage of an inclined plane with a length of 10 meters and a height of 2 meters?

• 2

• 5

• 10

• 20

View the picture: The Input Gear turns 10 times, how many times does the Output Gear turn?

• 0.3

• 3

• 15

• 30

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If an Input gear with 36 teeth drives an Output gear with 12 teeth, what is the gear ratio?

• 3:1

• 1:1.5

• 1:3

• 36:12

Input Gear A turns 5 times. How many turns does Output Gear B turn?

• 2.5

• 5

• 10

• 20

Based on the Picture: Gear A turns 30 times. How many turns does Gear B turn?

• 5

• 10

• 15

• 20

Tags

NGSS.MS-PS2-2

Based on the Picture: Gear A turns 30 times. How many turns does Gear C turn?

• 15

• 30

• 60

• 600

Tags

NGSS.MS-PS2-2

Based on the picture: IF the first gear (36 teeth) turns 12 times, how many turns does the LAST GEAR (24 teeth) TURN?

• 9

• 18

• 27

• 30

Tags

NGSS.MS-ETS1-1