(3%) Problem 20: The diagram shows a crate with mass m = 23 kg being pushed up an incline that makes an angle = 28.2 degrees with horizontal. The pushing force is horizontal, with magnitude P = 526 N. Starting from rest, the crate achieves a speed of 5.99 m/s as it moves a distance d = 5.52 m. 4, What is the work done by friction, in joules? w=|l tanh() cotanh() Degrees O Radians Submit Hint | I give up! Hints: 4% deduction per hint. Hints remaining: 1 Feedback: 7 deduction per feedback. Grade Summary Deductions Potential 100% Submissions Attempts remaining: 5 (4% per attempt) detailed view