« previous next »

Author Question: The work done by static friction can be: a. positive. b. negative. c. zero. d. Any of the ... (Read 72 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?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Shortly after his death, George Washington had already become myth—part Moses, part angel—in this wo Shortly after his death, George Washington had already become myth—part Moses, part angel—in this wo
Gram-stained cervical smear. Note the gram-negative diplococci Neisseria gonorrhoeae ... Gram-stained cervical smear. Note the gram-negative diplococci Neisseria gonorrhoeae ...
Static Stability & Environmental Lapse Rate Static Stability & Environmental Lapse Rate
Circular friction to the broad iliotibial band. The heel of the hand is used to create friction ... Circular friction to the broad iliotibial band. The heel of the hand is used to create friction ...
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ... What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ...
Mechanisms of positive control of transcription Mechanisms of positive control of transcription
Video: Bond in biological molecules (Ionic, Covalent and Hydrogen bonds)/ How atoms bond?

For a complete list of videos, visit our video library