a 150N boy rides a 60N bicycle a total of 200m. The frictional force against forward motion bicycle is 35N. How much work does boy do?
To find the work done by the boy, we can use the formula:
Work = Force × Distance
In this case, the force exerted by the boy is the sum of the force he exerts on the bicycle and the force of friction acting against the forward motion:
Total force by the boy = Force exerted on the bicycle + Frictional force
Total force by the boy = 150N + 35N
Total force by the boy = 185N
Now, we can plug this total force and the distance traveled into the work formula:
Work = Total force by the boy × Distance
Work = 185N × 200m
Work = 37,000 Joules