Efficiency is a measure of how much of the input energy is converted into useful work. It is calculated using the equation:
Efficiency = (Work done / Energy input) 脳 100% = (4900 J / 5000 J) 脳 100% = 98%
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:
Solution:
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:
A 5 kg object is lifted to a height of 2 m above the ground. Calculate its gravitational potential energy.
