Solution:
A machine requires an input energy of 2000 J to lift a 50 kg load to a height of 2 m. If the machine takes 5 seconds to lift the load, calculate its efficiency. Solution: A machine requires an input energy of
GPE = m × g × h
Efficiency is a measure of how much of the input energy is converted into useful work. It is calculated using the equation: It is calculated using the equation: First, calculate
First, calculate the work done:
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. we've explored the concepts of work