I think part of the problem in the treatment of work is hierarchy.
With the correct hierarchy you break the circle.
Work done is the quantity of energy transferred and is typically fd = W which I believe to be incorrect.
It requires energy to create a force.
Energy can be transferred whether there is acceleration or not.
Gravity is a stationary force that does work(transfers energy even though there is not physical acceleration ie standing on the ground). The force doesnt go away as soon as you step onto the ground.
Every single energetic transaction can be expressed in terms of kinetic energy.
Should it be F = KE*ftlbs? And work should be W = KE*time. KE being kinetic energy.
To turn a fan attached to an electric motor requires the transfer of motion from the generator to the motor.
The energy of motion is kinetic energy. It is not kinetic force. W is not a transfer of F=ma.
A force can be stationary, motion is not.
I think the collage text book is inconsistent in its treatment of work - biological vs mechanical..
Brant
With the correct hierarchy you break the circle.
Work done is the quantity of energy transferred and is typically fd = W which I believe to be incorrect.
It requires energy to create a force.
Energy can be transferred whether there is acceleration or not.
Gravity is a stationary force that does work(transfers energy even though there is not physical acceleration ie standing on the ground). The force doesnt go away as soon as you step onto the ground.
Every single energetic transaction can be expressed in terms of kinetic energy.
Should it be F = KE*ftlbs? And work should be W = KE*time. KE being kinetic energy.
To turn a fan attached to an electric motor requires the transfer of motion from the generator to the motor.
The energy of motion is kinetic energy. It is not kinetic force. W is not a transfer of F=ma.
A force can be stationary, motion is not.
I think the collage text book is inconsistent in its treatment of work - biological vs mechanical..
Brant
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