I dont understand how to explain this.
1 answer:
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Answer:
The last gearwheel would make 3 revolutions.
Step-by-step explanation:
The measure of the revolution of a gear per minute is referred to as the speed ratio. The speed ratio is the ratio of the speed of the driver gear to that of the driven gear, or ratio of the number of teeth of the driven gear to the number of teeth of the driver gear.
In the given question, the second and third gears are idlers. while the first is the driver and the fourth the driven.
The revolution of the last gearwheel can be determined by;
Speed ratio =
=
=
Speed ratio = 1 : 3
The last gear would make 3 revolutions.
Answer:
793 liters of washing fluid is needed
Step-by-step explanation:
step 1
Find the slant height of the triangular faces of pyramid
we know that
The lateral area of a square pyramid is equal to the area of its four triangular faces
so
where
b is the base of triangle (is the same that the length of the square base)
l is the slant height
To find out the slant height we need to apply the Pythagorean Theorem
so
we have
substitute
step 2
Find the lateral area of the pyramid
we have
substitute
step 3
Find out how much window washing fluid is needed
we know that
2 L of washing fluid cover 5 square meters
so
using proportion
Round up
793 liters of washing fluid is needed