Diana is moving into a new apartment. She wants to get a heavy chair up to her second-floor apartment, but it will only fit through the window.

Diana could strap the chair to her back and climb a ladder straight up to her window.

Or Diane could use a simple machine, by sliding the chair up an inclined plane to get to the window. Which of the following is a disadvantage of using an inclined plane to move the chair, instead of climbing a ladder to get to the window?

Question

Diana is moving into a new apartment. She wants to get a heavy chair up to her second-floor apartment, but it will only fit through the window. 

Diana could strap the chair to her back and climb a ladder straight up to her window.

Or Diane could use a simple machine, by sliding the chair up an inclined plane to get to the window. Which of the following is a disadvantage of using an inclined plane to move the chair, instead of climbing a ladder to get to the window?

anonymous · Answer

A Diane will have to exert more effort force to move the chair.
B Diane will have to travel a farther distance to move the chair.
C Diane will have to travel a shorter distance to move the chair.

anonymous · Answer

Diane will have to travel a farther distance to move the chair. 

There are advantages and disadvantages of using simple machines. Most simple 
machines work to multiply force at the expense of distance, or they multiply distance at 
the expense of force. 
 
In this case, using the inclined plane would mean that Diana could get to her window by 
using less force, which is an advantage. But the disadvantage would be that walking 
up an inclined plane forces her to travel a farther distance than just going 
straight up a ladder.