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a crane uses a petrol engine to lift a heavy girder.what is the overall energy conversion in the system when the girder is moving at a steady rate? a)chemical to kinetic b)chemical to pontential c)kinetic to potential d)potential to kinetic

snigdha , 12 Years ago
Grade 9
anser 3 Answers
Palash Agarwal

the answer is

a) chemical to kinetic

this is because when the petrol burns in the engine, it produces chemical energy. this in turn converts to kinetic energy, which is the movement or the lift upwards(of the object)

Last Activity: 12 Years ago
Jay Patel
a) Petrol`s chemical energy gets converted into Girder`s kinetic energy
Last Activity: 12 Years ago
Rizwan
  1. Chemical into Potential
Chemical gets converted into Kinetic and Kinetic is used up in lifting the girder thus increasing its Potential energy. So, on an overall basis Chemical gets converted into Potential.
Last Activity: 9 Years ago
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