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Friday, March 13, 2009

The Definition of Work

You pull a 15.0kg crate up a ramp 30 degree ramp at constant speed. The height at a distance [?????] the ramp is 2.0m. If the 15kg crate has a weight of 150 Newtons, how much work do you have to do to move the crate up the ramp? Show your work clearly.

No work, The crane will move it for me. 0/5



I think this student is more suited for the construction industry than physics academia.

Did you notice the teacher's typo in the question?

3 comments:

Unknown said...

There is no typo.

If you are thinking about the "weight" section, they are distinguishing between mass (kg) and weight (Newtons) with the acceleration due to gravity rounded to 10 m/s^2.

Unknown said...

P.S. Kudos on the crane drawing.

Unknown said...

LENS: Read the first sentence again :)