Question

Student 1 lifts a box with a force of 500 N and sets it on a tabletop 1. 2 m high. Student 2 pushes an identical box up a 5 m ramp from the floor to the top of the same table. Which student did the MOST work?.

Answer 1

The student 2 did the MOST work because he pushed the box to a greater height.

The given parameters:

• Force applied by Student 1 = 500 N
• Height of table for student 1 = 1.2 m
• Height of ramp for student 2 = 5 m

The work done by student 1 is calculated as follows;

Work = P.E = mgh

P.E = 1.2mg

The work done by the student 2 is calculated as;

P.E = 5mg

where;

• m is the mass of the box

Thus, we can conclude that the student 2 did the MOST work.

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