Question

Using a force of 28.0 Newton, a student pulls a 70.0 Newton weight along the tabletop for a distance of 15.0 meters in 3.0 seconds. Compute the power developed by the student.

Answer 1

140 watt

Step-by-step explanation:

We are given that

Force applied by student ,F=28 N

Weight pulled by students=70 N

Displacement,s=15 m

Time=3 s

We have to find the power developed by the student.

Work done=w=
`F* s`

Work done by the student=
`28* 15=420 J`

Power=
`(work\;done)/(time)`

Using the formula

Power=
`(420)/(3)=140watt`

Hence, the power developed by the students=140 watt