EXERC 1565.4 If the zero level for gravitational potential energy is selected to be midway down the slope, 5:00 m above point B), find the initial potential energy, the final potential energy, and the change in potential energy as the skier goes from point infty to infty in Figure 5.14. ANSW ER 2.94kJ,-2.94kJ,-5.88kJ

*** **Initial potential energy (Epi):** Skier berada di titik A, 5 m di atas titik referensi. * * * **Final potential energy (Epf):** Skier berada di titik B, 2 m di bawah titik referensi. * * * **Change in potential energy (ΔEp):** * * * **5. Kesimpulan:*** **Energi potensial awal:** 2.94 kJ* **Energi potensial akhir:** -2.94 kJ* **Perubahan energi potensial:** -5.88 kJ

****2. Langkah-langkah:*** **Tentukan titik referensi (zero level):** Midway down the slope, 5:00 m above point B.* **Hitung ketinggian awal (initial potential energy) dari titik referensi:** Skier berada di titik A.* **Hitung ketinggian akhir (final potential energy) dari titik referensi:** Skier berada di titik B.* **Hitung perubahan energi potensial (change in potential energy):****3. Rumus:*** **Energi potensial gravitasi:** * = energi potensial gravitasi * = massa benda * = percepatan gravitasi (9,81 m/s²) * = ketinggian dari titik referensi**4.