PHSX 211 10th Edition Lecture 12 Outline of Last Lecture Practice ProblemsI. What will happen when a magnet is attached snuggly and hanging in front of an iron cart?II. Consider the forces in the follow situation:a. A women pulling a sledb. A ball falling towards the earthOutline of Current Lecture Practice ProblemsI. Determine the acceleration of block B below.II. How much does the spring scale show in weight?III. Which case has a stronger acceleration?Current LecturePractice ProblemsI. Determine the acceleration of block B below.a. Mass of block A is 1kg, mass of block B is 2kg, the coefficient of kinetic between blocks A and B are 0.3, and coefficient of kinetic friction between block B and thesurface is 0.3 These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. ApulleyB20 Nb. Using the Equations:mBa=20−fsurface−TmAa=fB on A−Tc. Solve the second equation for T, then plug that into the first equation to solve for the acceleration, which is the same for both block A and B because they are connected by a rope. (Acceleration constraint).d. Make sure to plug in all the components of friction and be careful when calculating masses.a= 20−fsurface−(fB on A−mAa)a=20−ᶣk(mA+mB)g−(ᶣk(mA)g−mAa)e. a = 1.8 m/s2III. How much does the spring scale show in weight?a. 5 Nb. This is because the tension is pulling equally on each side, and the tension is the same throughout the rope.IV. Which case has a stronger acceleration?Scale5N5NAACase BCase AT = 10 N10Na. Case B has a larger magnitude accelerationb. This is because in Case A, the 10 N block is opposing the tension force, and so subtracts from it, where in case be the net force is 10 N. So the net force in Case B is larger thus having a larger
View Full Document
Unlocking...