Question

A student whose Mass is 60kg runs up a height of 10kg in 15 seconds find the power used by the students take g=98m/s.

Answer 1

Answer:

power=work÷time

p=mgh÷t

p=(60×9.8×10)÷15

p=(588)÷15

p=39.2

Answer 2

A student whose mass is 60kg runs up a height of 10m in 15 seconds the power used by the student is:

1. We know that power is the rate of doing work.

2. Mathematically P=W/t.

3. Here the work done by him is stored the form of potential energy given by W =mgh =60×9.8×10 = 5880 J

6. Thus power P= 5880/15 =392 Watts