Simple Machines
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Created by:
josephdroot on August 12, 2012
Description:
Levers, Inclined Planes, Pulleys, Gears
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Set copied from Volks
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47 terms
Terms | Definitions |
|---|---|
 Shorter | If the distance between the thread on a screw is large, would it take a longer or shorter time to screw it into a piece of wood? |
| Thread | What is the name of the inclined plane that wraps around a screw? |
| 2nd | If the load is in the middle of the fulrum and the effort what is its class; 1st, 2nd or 3rd? |
| 3 | Calculate the mechanical advantage of a lever with an effort arm length of 6 metres and a load arm length of 2 metres. |
| Speed | If the gear ratio is greater than 1 is it a speed or force multiplier? |
| Force | If a lever's mechanical advantage is greater than 1 is it a speed or force multiplier? |
| 2nd |  What class of lever is this; 1st, 2nd or 3rd? |
| 3rd |  What class of lever is this; 1st, 2nd or 3rd? |
| Bevel |  What type of gears are shown here? |
| Pulley |  What type of simple machine is this? |
| Wedge | The head of an axe is what type of simple machine? |
| Less | When a gear acts as a force multiplier, the driver has MORE/LESS teeth than the follower. |
| Less | A force multiplier has a gear ratio MORE/LESS than 1. |
| Faster | In a force multiplier, the driver gear turns FASTER/SLOWER than the follower. |
| More | When a machine acts as a speed multiplier, the driver has MORE/LESS teeth than the follower. |
| More | A speed multiplier has a gear ratio MORE/LESS than 1. |
| Slower | In a speed multiplier, the driver turns SLOWER/FASTER than the follower. |
| Opposite | When two gears are meshed together, the 2nd gear goes in the SAME/OPPOSITE direction to the first gear. |
| Small driver-large follower | The gear combination that produces the greatest force is SMALL DRIVER-LARGE FOLLOWER/LARGE DRIVER-SMALL FOLLOWER? |
| Large driver-small follower | The gear combination that produces the greatest speed is SMALL DRIVER-LARGE FOLLOWER/LARGE DRIVER-SMALL FOLLOWER? |
| Increasing | An inclined plane makes work easier by INCREASING/DECREASING the distance. |
| Both | An axe is an example of a LEVER/WEDGE/BOTH/NEITHER |
| Double | A 2 pulley system will halve the amount of force required to lift an object. This will result in pulling the string HALF/DOUBLE the distance of the object. |
| More | A screw with a very small distance between its thread will take MORE/LESS time to screw in than one with a more widely spaced thread. |
| Less | A screw with a very small distance between its thread will take MORE/LESS effort to screw in than one with a more widely spaced thread. |
| More | A pulley with 3 support strings will require MORE/LESS effort than a pulley with 4 support strings. |
| Can | A simple machine CAN/CANNOT both change the direction and the size of the force at the same time. |
| Increase | Increasing the angle of a ramp will INCREASE/DECREASE the effort required to pull up a trolley. |
| Dependent | In an experiment looking at the affect of ramp height on the force required to pull up a trolley, the force would be the DEPENDENT/INDEPENDENT variable? |
| Y | In an experiment looking at the affect of different number of pulleys on the force required to pull up a load, the amount of force would be graphed on the X/Y axis? |
| Independent | In an experiment looking at the affect of different number of pulleys on the force required to pull up a load, the number of pulleys would be the DEPENDENT/INDEPENDENT variable? |
| X | In an experiment looking at the affect of ramp height on the force required to pull up a trolley, the ramp height would be graphed on the X/Y axis? |
| Harder | Is it easier or harder to pull a load up a steep inclined place compared to a more gentle slope? |
| Worm |  If a worm gear was meshed with a toothed gear (as in the diagram), which one would have to be the driver for the machine to work? Worm or tooth? |
| C |  If each pulley's string was pulled 10cm, which load would be lifted by the least distance? |
| A | Which pulley system would require the most effort? |
| 3 |  Calculate the mechanical advantage of this lever |
| 1st | What class of lever is this - 1st, 2nd or 3rd? |
| Force | Is this lever an example of a force or a speed multiplier? |
| 4 |  Calculate the mechanical advantage of this pulley system. |
| Force | Is this pulley system a force or speed multiplier? |
| 5 | If the effort string was pulled 20cm, the load would be lifted by what distance? ......cm |
| Spiralled inclined plane | What type of simple machine is a cork screw? |
| Inclined plane | What type of simple machine is a car-park ramp? |
| Wedge | What type of simple machine is a knife? |
| Wedge | A .............. can also be described as a double inclined plane. |
| Lever | What type of simple machine is a set of chopsticks? |
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