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.
W = F × s = 50 N × 2 m = 100 J
Then, calculate the efficiency:
Solution:
Efficiency = (Work done / Energy input) × 100% = (980 J / 2000 J) × 100% = 49% A 20 N force is applied to a
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.
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. If the machine takes 5 seconds to lift
A 50 N force is applied to a block, causing it to move 2 m to the right. Calculate the work done on the block.
