Respuesta :
Answer:
1) The work done by both friends are equal
2) The first friend exerts the most power
Explanation:
1) The given parameters from the question are;
The size and weight of one friend = The size and weight of the other friend = W
The distance ran in the upwards direction = 10 flights of stairs
The work done = The weight × Distance
The work done by one friend = W × 10 flights of stairs
The work done by the other friend = W × 10 flights of stairs
Therefore, the work done by both friends are equal
2) The power exerted = The rate of doing work = Work done/(Time taken to do the work)
The power exerted by the first friend = W × 10 flights of stairs/(100 seconds)
The power exerted by the other friend = W × 10 flights of stairs/(120 seconds)
W × 10 flights of stairs/(100 seconds) > W × 10 flights of stairs/(120 seconds)
∴ The power exerted by the first friend > The power exerted by the other friend
The first friend exerts the most power
1) The work done by both friends is equal.
2) The first friend exerts the most power.
What is work?
Work is defined as the product of applied force and the distance through which the body is displaced on which the force is applied.
Work may be zero, positive or negative.it depends on the direction of the body displaced. if the body is displaced in the same direction of the force it will be positive.
1) The work done by both friends is equal.
The question's parameters are as follows:
One friend's height and weight Equals the other friend's height and weight = W
The distance traveled in a clockwise orientation equaled 10 flights of stairs.
[tex]\rm W =w \times d[/tex]
The work done by one friend = W × 10 flights of stairs
The work done by the other friend = W × 10 flights of stairs
Hence the work done by both friends is equal.
2) The first friend exerts the most power.
The power is given by;
[tex]\rm P= \frac{W}{t}[/tex]
For the first friend
[tex]\rm P_1= \frac{W\times 10}{100}[/tex]
For the second friend
[tex]\rm P_2= \frac{W\times 10}{120}[/tex]
[tex]\rm P_1 > P_2[/tex]
Hence the first friend exerts the most power
To learn more about the work refer to the link ;
https://brainly.com/question/3902440
