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

Efficiency = (Work done / Energy input) × 100% = (980 J / 2000 J) × 100% = 49%

where m is the mass of the object and v is its velocity.

A machine lifts a 100 kg load to a height of 5 m in 10 seconds. If the machine requires an input energy of 5000 J, calculate its efficiency. Efficiency = (Work done / Energy input) ×

where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height of the object above the ground.

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.

Efficiency is a measure of how much of the input energy is converted into useful work. It is calculated using the equation: where m is the mass of the object,

Gravitational potential energy is the energy an object possesses due to its height above the ground. The gravitational potential energy (GPE) of an object is given by the equation:

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