9. Work & Energy
Intro to Calculating Work
9. Work & Energy Intro to Calculating Work
19PRACTICE PROBLEM
A luggage cart with mass m is placed on an airport's moving walkway moving at speed v. The kinetic friction coefficient between the cart and walkway is μk . Over time t, the cart stops moving relative to the walkway, traveling distance d=21μkgv2 . How much of the work done by the walkway's motor is used against friction and how much to accelerate the luggage?
A luggage cart with mass m is placed on an airport's moving walkway moving at speed v. The kinetic friction coefficient between the cart and walkway is μk . Over time t, the cart stops moving relative to the walkway, traveling distance d=21μkgv2 . How much of the work done by the walkway's motor is used against friction and how much to accelerate the luggage?