I understand that the mass is given in part B. But not having the mass in the initial problem implies that mass is not needed to solve part A. I was hoping that someone could tell me how to solve part A without mass. Sorry for the confusion
Homework Statement
"A bicyclist can coast down a 5° hill at a constant 7.0 km/h. Assume the force of friction (air resistance) is proportional to the speed v so that Fair = cv."
(a) Calculate the value of the constant c.
(b) Calculate the average force that must be applied in order to...
Hello everyone, I'm a bit new to PF so bear with me here.
I'm currently a senior in high school and I've been dead set on a ME degree since 8th grade, however I recently discovered that one of my main school choices offers electromechanical engineering as a major. Since I also have a growing...
I had this same question a few days ago. You just have to realize that the force she puts on the rope will lift her through the pulley, but also lift her directly. This lead me to believe that she would only need exert half her weight in force. I tried F=(1/2)mg, and it was correct.
You know the planes x velocity is 97.5(cos50) therefore this will be the packages x velocity (ignoring air resistance). You can find the y velocity because you know the height at which the package is dropped. Use these two velocities as the sides of a right triangle and using the inverse tangent...