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What makes the gears turn together?
The teeth of the gears interlocking as they turn.
The bigger gear has more teeth than the smaller gear. When the bigger gear turns one round, how does it affect the smaller gear?
The smaller gear will turn more than one round with every turn of the bigger gear. This means that the smaller gear turns faster than the bigger gear.
If the smaller gear turn in a clockwisse direction, in what direction will the bigger gear turn?
Anti-clockwise direction
What happens to the bigger gear when we turn the smaller gear?
the bigger gear will also turn but in the opposite direction.
What are gears?
Simple machine that have wheels and teeth
What's the name of this example of an inclined plane?
A ramp
Why do the inclined plane reduce the force applied (effort)?
Because the effort moves the objects over a greater distance.
Less .......... is needed if we use an inclined plane to reach a higher lever.
effort
What is the typle of simple machine with a sloping surface?
Inclined plane
The wheel ...... the force applied to move the load and axle.
Multiplies
Which moved a greater distance, the wheel or the axle?
The wheel
Which is bigger, the wheel or the axle?
The wheel
Point out which one is the wheel and axle!
Draw which one shows the wheel and axle!
A pulley system used on ship is usally called ... and ...
a block and takle
What is the function of movable pulley?
To reduce the effort needed to move a load
Mention the function of fixed pulley!
To change the direction of the force applied (effort)
How does the nutcracker make it easier for us to do work?
The nutcacker reduces te effort needed to crack a nut by multiplying the force applied
What is the function of third-class lever?
To multiply speed
What can you conclude about this way to reduce the effort to lift the load?
The effort to lft the load is reduced when a longer lever is used.
What was done to enable the load to be lifted in Diagram D?
A longer lever was used to lift the load.
What you can conclude about the way to reduce the effort to lift the load?
The effort to lift the load is reduced when the fulcrum is placed closer to the load.
What was done to enable the load to be lifted in diagram B?
The fulcrum was moved closer to the load.
What is the function of first-class and second-class levers?
to multiply the force applied (effort) to produce a greater force.
What is a fulrum in a lever?
The point at which lever is resting
How does a simple machine help us to do work?
It makes it easier and faster for us to do work
What is the type of simple machines of this tools? Identify the effort, fulcrum and load!
Identify the effort, fulcrum and load!
What type of simple machines is this?
1st class lever
Point it out!
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