PHY131H1 Lecture : PHY 131

• School: UTSG
• Department: Physics
• Course: PHY131H1
• Professor: David Harrison

Document Summary

Block a and b, attached by a string s. Ms, with two force fbons and faons, fnet=ms*a. Mass of string is not zero, so there has to be a net force on the string. The main point is that the tension on the right side of the string is not the same as the tension on the left side of the string. Make an axis, with y pointing down the incline plane, and x 90 degree to y. You can use @ to break down gravity into x-y components. If you increase @, normal force goes down, and friction force goes down as well. As soon as the object moves kinetic friction takes over, and to coefficient is lower than static friction, so the object will accelerate. Strange coordinate system r inwards toward the centre t tangent to circle z perpendicular to the plane of the motion velocity will always point in t centripetal acceleration will always point in r.