This topic contains a solution. Click here to go to the answer

Author Question: A 4.0-kg block is lowered down a 37 incline a distance of 5.0 m from point A to point B. A ... (Read 67 times)

Starlight

  • Hero Member
  • *****
  • Posts: 567

A 4.0-kg block is lowered down a 37 incline a distance of 5.0 m from point A to point B. A horizontal force (F = 10 N) is applied to the block between A and B as shown in the figure. The kinetic energy of the block at A is 10 J and at B it is 20 J. How much work is done on the block by the force of friction between A and B?
 
   


   
  a.
  58 J
   
  b.
  53 J
   
  c.
  68 J
   
  d.
  63 J
   
  e.
  47 J

Question 2

A force acting on an object moving along the x axis is given by Fx = (14x  3.0x2) N where x is in m. How much work is done by this force as the object moves from x = 1 m to x = +2 m?
   
  a.
  +12 J
   
  b.
  +28 J
   
  c.
  +40 J
   
  d.
  +42 J
   
  e.
  28 J



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

GCabra

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

c

Answer to Question 2

a



Starlight

  • Hero Member
  • *****
  • Posts: 567
Both answers were spot on, thank you once again



GCabra

  • Sr. Member
  • ****
  • Posts: 331

 

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

For a complete list of videos, visit our video library