Work, Energy and Power

This lesson covers the definitions of work, energy, and power. It explains potential and kinetic energy as forms of mechanical energy. The lesson also includes calculations related to work done and the concept of power as the rate of doing work.

• 15:04 “And it is obtained by calculating half of the total mass of the object multiplied by the square of its velocity, that is, half MV square. So, M is the mass of the object and V is the velocity of the object. So, we have a...”
• 13:19 “So, our potential energy will be 20 kg, which is the mass of the body multiplied by the height, which is about 8 m and the acceleration due to gravity, which is 10 Newton/kg. We obtained 1,600 joules, which is the unit o...”
• 15:51 “So, half times 10 times 15 square gives us 225 multiplied by the 2, which is the denominator of the half by 10. You have 5 multiplied by the 225. Then the energy possessed by this body is about 1,125 joules. So, the body...”