Mechanical Reasoning Test – Force and Moment 2 -

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Question 1 of 10
1. Question
A worker pushes on a heavy box as shown. Which of the following statements are true if the box does not accelerate?
A. The force applied by the worker on the box is equal to the force on the worker by the box.
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B. The force applied by the worker is less than the maximum force of static friction (in this case the coefficient of static friction times the weight of the box).
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C. The force applied by the worker is equal to the friction force.
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D. All of the above.
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Question 2 of 10
2. Question
A worker pushes on a heavy box as shown. Which of the following statements is not true if the box does accelerate?
A. The force applied by the worker on the box is equal to the force on the worker by the box.
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B. The force applied by the worker is greater than the force of static friction (in this case the coefficient of static friction times the weight of the box).
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C. The force applied by the worker is equal to the friction force.
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D. All of the above
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Question 3 of 10
3. Question
The above shapes are cut from cardboard and tacked to a bulletin board with a white thumb tack as shown. Which is most stable?
A. A
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B. B
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C. C
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D. They are the same.
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Question 4 of 10
4. Question
A box is supported by two or three identical legs as shown. Which structure can support more weight? (imagine the three legs in B as being a tripod)
A. A
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B. B
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C. They are the same.
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D. Need more information.
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Question 5 of 10
5. Question
In the middle ages houses were taxed based on the area they occupied on the ground. In order to pay less taxes houses were constructed as depicted above. Why aren’t houses still built this way?
A. This is still a good way to build a house.
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B. Houses built this way are unstable.
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C. Houses built this way are too stable.
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D. People no longer wish to pay less taxes.
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Question 6 of 10
6. Question
Which brick is more likely to tip?
A. A
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B. B
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C. They are the same.
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D. Need more information.
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Question 7 of 10
7. Question
A typical method of splitting logs for firewood is shown above. Which wedge will split the log more quickly? (i.e. Which wedge must be driven the shortest distance into the log until it will split?)
A. A
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B. B
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C. They are the same.
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D. Need more information.
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Question 8 of 10
8. Question
A typical method of splitting logs for firewood is shown above. Which wedge will split the log more easily? (i.e. Which wedge requires the least force to split the log?)
A. A
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B. B
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C. They are the same.
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D. Need more information.
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Question 9 of 10
9. Question
Which acceleration corresponds to the given velocity?
A. A
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B. B
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C. C
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D. None of these
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Question 10 of 10
10. Question
Which velocity corresponds to the given position?
A. A
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B. B
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C. C
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D. None of these
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Mechanical Reasoning Test – Force and Moment 2

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