a bucket full of water is raised from a well by means of a rope which is wound round a pulley of diameter 77 cm. bucket takes 1min 28 seconds to ascend at a uniform speed of 1.1 m/sec. find the no. of revolutions which the pulley makes in raising the bucket.
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Step-by-step explanation:
the part of your body at the end of your arm which has a thumb, four fingers and a palm
हाथ
He took the child by the hand. He took the child by the hand.
2.
INFORMAL
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थोड़ी मदद, कुछ सहायता
I’ll give you a hand with the washing up. I’ll give you a hand with the washing up.
verb
to give or pass something to somebody
किसी को कुछ देना या आगे बढ़ाना
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Answer:
Diameter =77 cm
Radius =
2
D
=
2
77
cm =
200
77
m
Speed =1.1 m/s
Time =1 min 28 sec=88 sec
Distance can be completed as S×T=1.1×88=96.8 m
Circumference ⇒2×π×r=2×
7
22
×
200
77
=2.42 m
∴ No. of Revolution =
Circumference
Distance
=
2.42
96.8
=40
∴ No. of revolution ⇒ 40
Step-by-step explanation:
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