It takes 27 joules to lift a 20-pound box. A worker has a lever available that is 2.5 meters long. Which amount of force needs to be applied to lift the box?
• 0.54 newton
• 10.8 newtons
• 67.5 newtons
• 5.4 newtons
The answer is 10.8 newtons, I did the test and got this one right with the answer
what is the answer???????
whats the answer
To determine the amount of force required to lift the box, we can use the formula for work:
Work = Force × Distance
Given that it takes 27 joules of work to lift the box, we can rearrange the formula to solve for the force:
Force = Work ÷ Distance
The distance in this case is the length of the lever, which is 2.5 meters.
So, the force can be calculated as follows:
Force = 27 joules ÷ 2.5 meters
Calculating this, we get:
Force = 10.8 newtons
Therefore, the correct answer is:
• 10.8 newtons