Static Friction doing work?

  • #1
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Homework Statement


My textbook has a true or false problem that says Static Friction can never do work on an Object and they say that it's false.. How can static friction do work?
 

Answers and Replies

  • #2
collinsmark
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Consider taking measurements in a moving frame of reference.

Or consider a block resting on a cart (with static friction), and the cart moves.
 

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