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Serjik [45]
3 years ago
11

A boy pulls with a 92.5 N force on the handle of a 27.5 kg wagon while the handle makes an angle of 35.0 degrees with the horizo

ntal. If friction is negligible, and the boy pulls a total distance of 215.6 m, how much work has the boy done
Physics
1 answer:
sweet [91]3 years ago
8 0

Answer:

W_b \approx 16336J

Explanation:

From the question we are told that

Force of pull F= 92.5

Weight of handle W_h=27.5 kg

Angle of handle \angle =35.0

Distance d=215.6 m

Generally the work done by the boy can mathematically be represented as

W_b=F*dcos \theta

W_b=92.5*27.5 *cos(35)

Therefore

W_b=16336.34922J

W_b \approx 16336J

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Explanation:

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2) Ball rising 5.7m (vertical rise)

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⇒ Vo = 10.6 m/s

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Vf = 0 ⇒ Vo = gt ⇒

t = Vo / g = 10.6 m/s / 9.81 m/s² = 1.08 s

3) Ball dropping from 5.7 m to 1.20m above the pavement (free fall)

i) d = 5.7m - 1.20m = 4.5m

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4) Total time

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