Question Detail
Question
In problem 7 (the inclined plane with spring), what is the maximum compression of the spring?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The solution calculates E_i = mgh = 147 J, subtracts work by friction (25.4 J) to get E_f = 121.6 J, and then uses ½kx² = E_f to find x = √(121.6 / 150) = 0.90 m = 90 cm.
Hint
Energy at the bottom of the incline (after friction) is converted to spring potential energy.