A boy holds a 40-N weight at arm's length for 10 seconds. His arm s 1.5 m above the ground. What is the work done by the force of the boy on the weight while he is holding?
2 Answers
Explanation:
Work done is given by the equation:
where:
#W# is the work done in joules
#F# is the force applied in newtons
#d# is the distance moved in meters
So, we get:
0 J
Explanation:
Work done is given by the equation:
where
A bit of discussion about a slight variation to the situation:
What if the boy walked across the room with the weight held in the position described?
The work done would still be zero.
Therefore
I hope this helps,
Steve