Practice Applications Of Force In Engineering (4.9) - Measurement and Effects of Force

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a lever?
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Think about how seesaws work.
Question 2.
What does mechanical advantage mean?
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Consider how pulleys work.
3Question 3.
What is the primary function of a lever?
- To multiply speed
- To amplify force
- To provide resistance
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Think about how a see-saw works.
4Question 4.
Are pulleys used to reduce the amount of force needed to lift objects?
- True
- False
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Recall how cranes operate.
Question 5.
A lever has a load arm of 1.5 meters and an effort arm of 0.5 meters. Calculate the mechanical advantage.
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Use the formula for mechanical advantage.
Question 6.
A structural engineer is designing a bridge. If the total weight it must support is 50,000 kg and the materials used have a safety factor of 1.5, what is the maximum allowable stress the materials can endure?
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Think about how safety factors are incorporated in design.

5 more questions in this section. Enroll free to practise them all.