Question

A bucket is raised from a well by means of rope which is wound round a wheel of diameter 154 cm. If bucket ascends in 2 minutes 56 seconds with a uniform speed of 2.2 m/s, then calculate the number of complete revolutions the wheel makes in raising the bucket.

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Answer 1

Answer:

number of complete revolutions is = 80

Step-by-step explanation:

GIVEN ;

Diameter = 154 cm

Radius = 154÷2×1÷100m

= 0.77 m

Speed = 2.2 m/s

time = 2min 56 sec = 176 sec

Distance = speed×time

= 2.2×176

= 387.2 m

Number of revolution = distance/circumference

= 387.2/(2×22/7×0.77)

= 387.2×7/44×0.77

= 2710.4/33.88

= 80

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