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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

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

Grade:9

3 Answers

Palash Agarwal
41 Points
10 years ago

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)

Jay Patel
35 Points
10 years ago
a) Petrol`s chemical energy gets converted into Girder`s kinetic energy
Rizwan
13 Points
8 years ago
  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.

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