A rope is wound round the outside of a circular drum whose diameter is 70 cm and a
bucket is tied to the other end of the rope. Find the number of revolutions made by
the drum, if the bucket is raised by 11 m.
Answers
The number of revolutions made by rope around drum is 5
•Radius of circle = diameter / 2
•Radius of drum = (.70/2)
= .35 m
•Circumference of circle = 2*π * r
•Circumference of drum = 2*π * (.35)
= 2*(22/7)* (.35)
= 2.2 m
•Revolution made by rope around drum = (length of rope used to raise bucket) / (Circumference of drum)
= 11 / 2.2
= 5
Answer:
The number of revolutions made by rope around drum is 5
•Radius of circle = diameter / 2
•Radius of drum = (.70/2)
= .35 m
•Circumference of circle = 2*π * r
•Circumference of drum = 2*π * (.35)
= 2*(22/7)* (.35)
= 2.2 m
•Revolution made by rope around drum = (length of rope used to raise bucket) / (Circumference of drum)
= 11 / 2.2
= 5
Step-by-step explanation: