Question

The picture below shows three elevators, each carrying a different number of people to different floors. If all the people weigh the same, which elevator is doing the most work?

(Weight = Force, and Number of floors = Amount of displacement)


Select one:
a. Elevator 1 is doing the most work.
b. Elevator 2 is doing the most work.
c. Elevator 3 is doing the most work.
d. They're all doing the same amount of work. ​

Answer 1

Answer:

Option D

They are all doing the same amount of work

Explanation:

Given;

• (Weight = Force and Number of floors = Amount of displacement)

For Elevator 1

• Applied Force = 1 Newton
• Total Displacement = 10 meters

For Elevator 2

• Applied Force = 2 Newton
• Total Displacement = 5 meters

For Elevator 3

• Applied Force = 10 Newton
• Total Displacement = 1 meter

To Find;

• Work done = ?

Here,

W = F • d

For Elevator 1

W = 1 • 10

W = 10 Nm

For Elevator 2

W = 2 • 5

W = 10 Nm

For Elevator 3

W = 10 • 1

W = 10 Nm

Here, In each case the work done is same.

Thus, They're all doing the same amount of wwork

 

-TheUnknownScientist 72