Q
A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to____________?
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A
A. Prop him up if he falls
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B
B. Spread out his weight and reduce the pressure on the rope
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C
C. Add extra weight to keep the rope tightly stretched
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D
D. To keep the centre of gravity always vertically above the rope
Correct Answer:
D. D. To keep the centre of gravity always vertically above the rope
