Physics word problem?
Two workers load identical refrigerators into identical trucks by different methods. One worker has the refrigerator lifted upward onto the back of the truck, which is 1.9 m above the ground. The other worker uses a ramp to slide the refrigerator onto the back of the truck. The ramp is 5.3 m long, and raises the refrigerator 1.5 m above the ground. The amount of work done by both workers is the same: 1870 J. What are the magnitudes of the force the second worker must exert to load the refrigerators?
Two workers load identical refrigerators into identical trucks by different methods. One worker has the refrigerator lifted upward onto the back of the truck, which is 1.9 m above the ground. The other worker uses a ramp to slide the refrigerator onto the back of the truck. The ramp is 5.3 m long, and raises the refrigerator 1.5 m above the ground. The amount of work done by both workers is the same: 1870 J. What are the magnitudes of the force the second worker must exert to load the refrigerators?
1 Answer
It would seem worker 2 will exert a force of 353 N along the ramp.
Explanation:
I may be missing something here, or misinterpreting the question, but it seems all we need to do is calculate F based on the work done by worker 2
This force is exerted along the ramp.
I have not taken friction into account, and have ignored the (curious) fact that although the trucks are identical, worker 1 raises his fridge 1.9 m, but worker 2 only 1.5 m?
