PHYS 1P21 Lecture 15: Applications of Newton Laws IV

• School: Brock University
• Department: Physics
• Course: PHYS 1P21
• Professor: Santo D' Agostino

Document Summary

Further assume that the string slides on the pulley without friction (or, more accurately, turns the pulley without slipping, so that friction need not be considered). Further assume that the string slides on the pulley without friction (or turns the pulley without friction needing to be considered). Suppose that the coefficient of static friction between the 2 kg block and the horizontal surface is 0. 8, and that the coefficient of kinetic friction between the same surfaces is 0. 5. Now for an important bit of strategy: note that if the tension force is less than the maximum value of the static friction force, then the blocks will not move. Example: calculate the tension in the string and the acceleration of each block. Assume that the strings are massless and don"t stretch, and that the pulley is massless and there is no friction at the bearing.