« previous next »

Author Question: The work done by static friction can be: a. positive. b. negative. c. zero. d. Any of the ... (Read 30 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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

@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 :D


« previous next »
 

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Ventilation of the mammalian lung by negative pressure filling. Ventilation of the mammalian lung by negative pressure filling.
Feedback mechanisms of the thyroid gland: (1) stimulus; (2) release of TSH; (3) release of thyroid h Feedback mechanisms of the thyroid gland: (1) stimulus; (2) release of TSH; (3) release of thyroid h
Static Stability & Environmental Lapse Rate Static Stability & Environmental Lapse Rate
ABO and Rh grouping using gelatin centrifugation. The blood sample above is AB negative as indicated ... ABO and Rh grouping using gelatin centrifugation. The blood sample above is AB negative as indicated ...
Deep friction around the hip joint using the knuckles. Use the knuckle of the middle finger to apply ... Deep friction around the hip joint using the knuckles. Use the knuckle of the middle finger to apply ...
Please show all your work (4 marks) Please show all your work (4 marks)
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library