Question Detail
Question
In the two-block system example, the equations 40 - T = 4a and T - μR = 6a are added together. What is the resulting combined equation?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Adding the left sides: (40 - T) + (T - μR) = 40 - μR. Adding the right sides: 4a + 6a = 10a. This yields 40 - μR = 10a.
Hint
Notice that the tension T cancels out when the two equations are added.