Work is defined as the product of the force applied to an object and the displacement of the object in the direction of the force. Mathematically, work (W) is represented by the equation:
Solution:
Efficiency = (Work done / Energy input) × 100% = (4900 J / 5000 J) × 100% = 98% Work is defined as the product of the
A 20 N force is applied to a block, causing it to move 3 m to the right. Calculate the work done on the block.
Then, calculate the efficiency:
GPE = m × g × h = 5 kg × 9.8 m/s^2 × 2 m = 98 J
In this guide, we've explored the concepts of work, energy, and efficiency in the context of physics. We've also applied these concepts to Aktiviti 13 in the Buku Teks Fizik Tingkatan 4 KSSM. By understanding these concepts, students can develop a deeper appreciation for the relationships between force, displacement, energy, and efficiency. Then, calculate the efficiency: GPE = m ×
KE = ½ × m × v^2 = ½ × 5 kg × (2 m/s)^2 = 10 J