the radius of the chain wheel of a toy bicycle is 7cm given that the portion of the chain in contact with the wheel is of length 11 cm calculate the angle subtended at the centre of the wheel by this portion of the chain
Answers
Answered by
2
Answer:
Diameter of circular wheel =2r=56cm
Circumference =2πr=π(2r)=56πcm
1 revolution of wheel covers distance equal to its circumference =56πcm
Total distance covered by wheel =1.1km=1.1∗1000m=1100m=1100∗100cm=110000cm
Total Distance = Number of revolutions ∗ 1 revolution distance
Number of revolutions =
1revolutiondistance
TotalDistance
=
56π
110000
=625.25≈625
The number of revolutions made by a bicycle wheel 56 cm in diameter in covering a distance of 1.1 km is 625.
Similar questions