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BigorU [14]
3 years ago
12

A mechanic is trying to loosen a nut with a wrench, but it is stuck. What could the mechanic do to help loosen the nut? (Hint: T

his is a wheel and axle situation.)
A. Use a heavier wrench.
B. Use a lighter wrench.
C. Use a longer wrench.
D. Use a shorter wrench.
Physics
1 answer:
SIZIF [17.4K]3 years ago
5 0
C. Use a longer wrench, this is because it would create a greater turning moment as moment=force*distance
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Answer:

The correct answer is C

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A caterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. Eventually,
tiny-mole [99]

<u>Answer:</u>

Total displacement traveled = 298

<u>Explanation:</u>

According to the given information, to actually climb for 1 cm, the caterpillar has to travel for 3 cm (2 cm upwards and 1 cm downwards).

So in order to climb straight up a one meter (100 cm) high wall, it needs to travel for 99 × 3 = 297 cm.

Then after a little it can travel up another cm to reach the top.

Therefore, the total displacement traveled = 297 + 1 = 298 cm

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