Question

Two physics students, Will N. Andable and Ben Pumpiniron, are in the weightlifting room. Will lifts the 100-pound barbell over his head 10 times in one minute; Ben lifts the 100-pound barbell over his head 10 times in 10 seconds. Which student does the most work? ______________ Which student delivers the most power? ______________ Explain your answers.

Answer 1

Explanation:

Both Ben and Will are doing same amount of work. that is lifting 100 pounds of barbell 10 times.

They apply the same force to lift the same barbell up to same distance hence, they do equal work.

Yet Ben is more powerful than Will because rate of work done (Power) by Ben is higher than the that of Will.

Answer 2

Answer:

 "Same"  

"Ben Pumpiniron"

Explanation:

Given that

Will lifts 100 pound ,10 times in 1 minute

Ben lifts 100 pound ,10 times in 10 sec

As we know that work done given as

W= m g h

The height and mass are same for both therefore there will do the same work.

But we know that rate of work is known as power.Therefore Ben is more power .

Power

$P=\dfrac{W}{t}$

t is less for Ben that is why power is more in Ben.

The answer will be "Same"  and "Ben Pumpiniron".