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?
A.
Diane will have to travel a shorter distance to move the chair.
B.
Diane will reduce the mass of the chair by using an inclined plane.
C.
Diane will have to exert more effort force to move the chair.
D.
Diane will have to travel a farther distance to move the chair.

Answer 1

Answer:

The correct option is D) Diane will have to travel a farther distance to move the chair.

Explanation:

To slide the chair up an inclined path, Diana would have to travel a further distance. While using the ladder to reach the second floor window would have made the distance smaller, but more force would have been required to move the chair through climbing a ladder. Diane would have got easily exhausted for moving the chair across the ladder. Using the inclined path will make the distance farther but as much force would not be required in this process. Hence, the method of using an incline is better.

Answer 2

Answer:

The correct anwser would be D.

Explanation: