Maddie is on the weightlifting team at her school. She must lift as much weight as possible from the ground to a straight up standing position. How much work will Jolie do if she uses a force of 6 N to lift 150 pounds of weight to a height of 1.5 m?
a. 3.3 J
b. 3.5 J
c. 6.5 J
d. 9.0 J
6 N* 1.5 m =9 Joules
To find the work done by Jolie, we can use the formula:
work = force × distance
Given that the force exerted by Jolie is 6 N and the distance the weight is lifted is 1.5 m, we can calculate the work done as:
work = 6 N × 1.5 m
work = 9 J
Therefore, the correct answer is d. 9.0 J.
To find the work done by Jolie, we can use the formula:
Work = Force × Distance
First, we need to convert the weight from pounds to the SI unit of force, which is Newtons (N). We know that 1 pound is equal to approximately 4.448 N. Therefore, 150 pounds is equal to 150 × 4.448 N.
Next, we can substitute the values into the work formula. The force is 6 N and the distance is 1.5 m. So:
Work = 6 N × 1.5 m
Simplifying the expression:
Work = 9 J
Therefore, the amount of work Jolie will do is 9 J (option d).