Question

A bucket is raised from a well by means of a rope which is wounded round a wheel of diameter 77 cm. given that the bucket ascends in 1min 28 sec with a uiform speed of 1.1 m/s, calculate the number pf complete revolutiopns the wheel makes in raising the bucket.

Answer 1

Answer:

it may. pf up............

Step-by-step explanation:

ggg

Answer 2

Step-by-step explanation:

Given :

Diameter = 77 cm

Radius = 77/2 = 38.5 cm

Convert it into m = 38.5/100 = 0.385m

Speed = 1.1 m/s

Time = 1 min 28 Sec = 60 + 28 = 88 sec

Find :

The number of complete revolution.

Solution :

Distance = Speed × Time

➡ 1.1 × 88

➡ 96.8 m

Number of revolution = distance / circumference

$= > \frac{96.8 \times 7 }{2 \times 22 \times 0.385}$

$= > \frac{968 \times7 \times 100}{2 \times 22 \times 0385 \times 10}$

$= > 8 \times 5$

$= > 40.$

Hence :

The number of complete revolution is 40.