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Author Question: The work done by static friction can be: a. positive. b. negative. c. zero. d. Any of the ... (Read 73 times)

@Brianna17

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on: Jul 28, 2018
The work done by static friction can be:
 a. positive.
  b. negative.
  c. zero.
  d. Any of the above.

Question 2

I use a rope 1.00-m-long to swing a 1.00-kg weight around my head. The tension in the rope is 20.0 N. In half a revolution how much work is done by the rope on the weight?
 a. 20.0 J
  b. 31.4 J
  c. 123 J
  d. 0


bob

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

D


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@Brianna17

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


bob

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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