(a)
To find: The relationship between the treads of ascending stairs.
(a)
Answer to Problem 45PPS
The treads of the ascending stairs are parallel planes.
Explanation of Solution
Given information:
The given information is Escalator consist of steps on a continuous loop that is driven by a motor, at the top and bottom of the platform, the steps collapse to provide a level surface for entrance and exit.
Calculation:
The treads of the ascending stairs are parallel planes. Each stair may look like a line but it is really a plane. Think of an actual stair.
Therefore, the treads of the ascending stairs are parallel planes.
(b)
To find: The relationship between the treads of the two steps at the top of the incline.
(b)
Answer to Problem 45PPS
The treads of the two steps at the top of the incline are coplanar.
Explanation of Solution
Given information:
The given information is Escalator consist of steps on a continuous loop that is driven by a motor, at the top and bottom of the platform, the steps collapse to provide a level surface for entrance and exit.
Calculation:
The two steps at the top of the incline lie in the same plane. So, they are coplanar.
Therefore, the treads of the two steps at the top of the incline are coplanar.
(c)
To find:The how do the treads of the steps on the incline of the escalator relate to the treads of the steps on the bottom of the conveyor.
(c)
Answer to Problem 45PPS
The treads of the steps on the incline of the escalator relate to the treads of the steps on the bottom of the conveyor are skew.
Explanation of Solution
Given information:
The given information is Escalator consist of steps on a continuous loop that is driven by a motor, at the top and bottom of the platform, the steps collapse to provide a level surface for entrance and exit.
Calculation:
These treads are skew. They are not parallel and they do not lie on the same plane.
Therefore, the treads of the steps on the incline of the escalator relate to the treads of the steps on the bottom of the conveyor are skew.
Chapter 3 Solutions
Geometry, Student Edition
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