Mechanical System Chapter 5
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the 3 types of levers? | show 🗑
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| show | Wout/Win x 100%
=mass in J/the amount of work used in J
=decimal
=to percent
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| show | is output force/input force
(output Divided by input)
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| What are the 6 simple machines? | show 🗑
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| show | When you use a pulley, you may hear the pulley squeak sound energy and it may become warm heat, this is the work done by friction. If you reduce the frictional force, you increase the efficiency of a machine. To reduce friction is to add grease or oil.
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| show | Length of Ramp/Height of Ramp
(Length of Ramp Divided by Height of Ramp)
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| show | The output work is always less than the input work because some of the energy put into using the machine converts into other forms of energy, such as heat, due to friction.
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| show | The ideal mechanical advantage of a pulley is the amount of support ropes that are being pulled in the opposite direction of the pulley system.
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| show | radius of wheel/radius of axle
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| How do you calculate the ideal mechanical advantage when the load is attached to the axle? | show 🗑
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| show | length of the input arm/length of output arm
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| What is a simple machine? | show 🗑
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| What is a mechanism? | show 🗑
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| What is a perpetual motion machine? | show 🗑
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| show | A elevator, a well, and a flagpole.
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| show | A door knob, a hose tap, and a bike.
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| show | A wheelchair ramp, a slide, and stairs.
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| What are examples of a class 1 lever? | show 🗑
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| show | A wheelbarrow, and a nutcracker.
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| What are examples of a class 3 lever? | show 🗑
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| What are examples of a wedge? | show 🗑
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| What are examples of a screw? | show 🗑
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| show | A machine is a mechanical system that reduces the force required to accomplish work.
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| What is the input force? | show 🗑
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| show | The force that the machine applies to the object.
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| show | The amount by which a machine can multiply an input force.
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| What is the ideal mechanical advantage? | show 🗑
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| show | The work a machine is designed to perform.
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| show | The effort.
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| What is the output? | show 🗑
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| What is a fulcrum? | show 🗑
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| What is efficiency? | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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