The work done by static friction can be: a. positive. b. negative. c. zero. d. Any of the ...

Author Question: The work done by static friction can be: a. positive. b. negative. c. zero. d. Any of the ... (Read 27 times)

@Brianna17

Hero Member
Posts: 550

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

Sr. Member
Posts: 343

Reply #1 on: Jul 28, 2018

Answer to Question 1

D

Answer to Question 2

D

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@Brianna17

Hero Member
Posts: 550

Reply #2 on: Jul 28, 2018

Both answers were spot on, thank you once again

bob

Sr. Member
Posts: 343

Reply #3 on: Jul 28, 2018

Great! Please up vote

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