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Questions and Answers
What is the main purpose of machines?
What is the main purpose of machines?
- To make our work more difficult
- To provide energy by themselves
- To increase physical force
- To replace physical labour (correct)
Which of the following is NOT considered a simple machine?
Which of the following is NOT considered a simple machine?
- Ramp
- Bicycle (correct)
- Shovel
- Screwdriver
What type of machines do not have parts that move?
What type of machines do not have parts that move?
- Manually handled machines
- Machines providing energy
- Complex machines (correct)
- Simple machines
When different simple machines work together, they are called:
When different simple machines work together, they are called:
Which of the following do some machines not do?
Which of the following do some machines not do?
What is the general term used for the external force applied to a machine?
What is the general term used for the external force applied to a machine?
In the context of simple machines, what is the force against which a machine works called?
In the context of simple machines, what is the force against which a machine works called?
What is a fixed point about which a machine turns while doing mechanical work?
What is a fixed point about which a machine turns while doing mechanical work?
What is the term for the ratio of the velocity of effort to the velocity of load?
What is the term for the ratio of the velocity of effort to the velocity of load?
What is the ratio of the force that performs the useful work of a machine to the force that is applied?
What is the ratio of the force that performs the useful work of a machine to the force that is applied?
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