일반물리학 1 — Kinetic Energy and Work: Problem 24

24 In Fig. 7-26, a horizontal force \(\vec{F}_a\) of magnitude 23.0 N is applied to a 3.00 kg psychology book as the book slides a distance \(d = 0.580\) m up a frictionless ramp at angle \(\theta = 30.0^\circ\). (a) During the displacement, what is the net work done on the book by \(\vec{F}_a\), the gravitational force on the book, and the normal force on the book? (b) If the book has zero kinetic energy at the start of the displacement, what is its speed at the end of the displacement?