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WorksheetsPulleys & Gears
Total questions: 33
Worksheet time: 20mins
Suppose the first gear in a system has 12 teeth. How many teeth should the second gear have, if you want the second gear to turn half as fast as the first gear?
6
24
12
36
The more teeth that there are on the second gear, the less it turns.
True
False
When gears have the same number of teeth, one of them will turn more than the other.
True
False
Why do you think oil is put on the chains of bicycles?
a) The oil reduces the friction, which makes it easier to ride.
b) Oil makes the sprocket shine
c) The chains rub against the sprockets, which would cause both of them to wear down over time.
Both A and C
In a fixed pulley, the direction of the effort is where?
up
down
left
right
In a move-able pulley, the direction of the effort force is where?
Down
Up
Left
Right
There are three types of pulleys: fixed, movable, and combined.
True
False
Bonus question: What is different about the way gears on a bicycle turn in comparison to regular spur gears?
a) Standard spur gears turn in opposite directions.
b) Sprockets on a bike are not meshed and both turn in the same direction using the chain
c) There's nothing different about it.
Both a and b
Bonus question: Which gear would be best for travelling the fastest on flat ground?
High gear would be best.
Low gear would be best.
A single movable pulley is useful because it can...
change the direction of a force
reduce the amount of effort required to lift a load
its easier to lift up than down
none of the above
A combined pulley is useful because it can...
change the direction of a force
reduce the amount of effort required to lift a load
both a & b
none of the above
Describe the purpose of a pulley systems and gear systems.
Changes the direction
Changes speed
Can transfer forces and motion
All of the above
There are 13 gears. If the driver gear goes clockwise, which way will the last gear turn?
Clockwise
Counterclockwise
What kind of gear is this?
Spur Gear
Bevel Gear
Rack Gear
Crown Gear
What kind of gear is this?
Spur Gear
Worm Gear
Bevel Gear
Crown Gear
What kind of gear is this?
Spur gears
Bevel Gears
Crown Gears
Worm gears
What kind of gear is this?
Rack and pinion
Bevel gear
Worm gear
Train gear
Fixed pulleys give you a mechanical advantage while movable pulleys can only change the direction of a force.
True
False
This is a picture of a...
Worm gear
Bevel gear
Spur gear
None of the above
If a load is 10 kg. and there is a mechanical advantage of 2, then the effort force would be...
10 kg.
2 kg.
5 kg.
2.5 kg.
When there are 2 or more gears working together it is called a...
gear machine
gear trolley
gear system
gear train
Which type of gear, lays flat, and operates in one plane (direction)?
spur gears
bevel gear
rack and pinion
crown gear
Bevel gears operate at a 90 degree angle.
True
False
Which gear would be best for going up a steep hill?
High gear would be best.
Low gear would be best .
Rotary motion moves in a straight line. Linear motion moves round, and round.
True
False
When two gears are touching the are ______?
combined
meshed
connected
intergrated
Fixed pulleys give you a mechanical advantage while movable pulleys can only change the direction of a force.
True
False
The FOUR type of motions are...
rotary
linear
reciprocating
oscillating
skipping
If a pulley system has a mechanical advantage of 4, what does that mean?
This means that it is 4 times easier to lift this load.
This means you only need a quarter of the effort to lift the load.
For example, if you lifted 100 kg, it would only take 25 kg of effort.
All of the above
Suppose the first gear in a system has 10 teeth. How many teeth should the second gear have if you want to get one turn from it for every three turns of the first gear?
30
3
10
20
what is this?
gear train with idler
bevel gear
cam and follower
universal joint
