Compound Machines & Structural Support
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10 Terms
What is a compound machine?
A machine made up of more than one simple machine.
How do you find the MA of a compound machine?
Find the MA of each simple machine in it, then multiply them together.
A compound machine has parts with MA of 5, 2 and 1. What is its total MA?
10, because 5 times 2 times 1 is 10.
What is structural support concerned with?
The strength or weakness of the columns or frameworks holding up a structure.
What else can structural support questions involve?
Objects being held up between two or more people.
What should you consider when reading a structural diagram?
The location and distribution of the structure relative to the number and type of supports.
Four people carry a weight that is equidistant from each of them. How is the load shared?
Equally — each person bears the same portion.
Four people carry a weight that sits closer to one of them. How is the load shared?
The person nearest the weight bears a larger portion of it.
What should you compare when judging the strength of support structures like bridges?
The number and type of the framework.