PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
Block A of mass 5.0kg rests on a horizontal rough table. It is connected by a light string over an ideal pulley to a hanging block B, as shown in a typical laboratory setup. The coefficient of static friction between A and the table is μs=0.40 and the coefficient of kinetic friction is μk=0.35.
(i) Calculate the minimum value of mass B required to just start the motion of block A.
(ii) If the actual hanging mass is 3.5kg, determine the acceleration of the system after motion begins.
(iii) For the situation in part (ii), compute the tension in the string while the blocks are moving.