water flows at a rate of 10m/minute through a cylindrical pipe 5mm in diameter.how long will it take to fill a conical vessel whose diameter at the base is 40 cm and depth 24 cm .
Answers
Speed of water = 10 m/min = 1000 cm/min
Volume of water that flows in 1 minute = Π r2 h = 22/7 x 1/4 x 1/4 x 1000 = 1375/7 cm3
Radius of conical vessel = 40/2 = 20 cm; Depth = 24 cm
Therefore, Capacity of the vessel = 1/3 x Π r2 h
= 1/3 x 22/7 x 20 x 20 x 24 = 70400/7 cm3
Therefore, Time required to fill the vessel = capacity of the vessel / volume of water flowing per minute
= 70400/7 / 1375/7 = 70400/7 x 7/1375 = 256/5 minutes = 51 min 12 sec
Answer:
Time taken = 5 mins
Step-by-step explanation:
Given:
Water flows at the rate of 0.5m/min
Internal radius of the pipe = 2 cm
Radius of the conical vessel = 10 cm
Depth of the conical vessel = 30 cm
To Find:
Time taken to fill the conical vessel
Solution:
First find the volume of water that flows out through the pipe in 1 min.
Here the pipe is in the shape of a cylinder.
Volume of a cylinder is given by,
Volume of a cylinder = π × r² × h
where r is the radius
and h is the height
Here height of the pipe = 0.5 m = 50 cm
Substitute the data,
Volume of water that flows out in 1 min = π × 2² × 50
⇒ 200 π cm³
Now the vessel is in the shape of a cone.
Volume of a cone is given by,
Volume of a cone = 1/3 × π × r² × h
Substitute the given data,
Volume of the cone = 1/3 × π × 10² × 30
Volume of the cone = 1000 π cm³
Now let the conical vessel be filled in x mins.
Hence,
Volume of water that flows out in x mins = Volume of the vessel
Substitute the data,
200 π × x = 1000 π
200 x = 1000
x = 1000/200
x = 5 mins
Hence the time taken to fill the conical vessel is 5 mins.