Jawapan Buku Teks Fizik Tingkatan 4 Kssm Aktiviti 13 Work Work Here

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.

First, calculate the work done:

Solution:

Efficiency = (Work done / Energy input) × 100% = (4900 J / 5000 J) × 100% = 98%

Now, let's apply the concepts we've learned to Aktiviti 13 in the Buku Teks Fizik Tingkatan 4 KSSM. A machine requires an input energy of 2000

Energy is the ability to do work. There are two main types of energy: kinetic energy and potential energy.

Potential energy is the energy an object possesses due to its position or configuration. There are two main types of potential energy: gravitational potential energy and elastic potential energy. Energy is the ability to do work

KE = ½ × m × v^2