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

Author Question: A string is attached to the rear-view mirror of a car. A ball is hanging at the other end of the ... (Read 43 times)

Coya19@aol.com

  • Hero Member
  • *****
  • Posts: 601
A string is attached to the rear-view mirror of a car. A ball is hanging at the other end of the string. The car is driving around in a circle, at a constant speed. Which of the following lists gives all of the forces directly acting on the ball?
 
  A) tension and gravity
  B) tension
  C) tension, gravity, and the centripetal force
  D) tension, gravity, the centripetal force, and friction

Question 2

Block A of mass 8.0 kg and block X are attached to a rope that passes over a pulley. A 50-N force P is applied horizontally to block A, keeping it in contact with a rough vertical face.
 
  The coefficients of static and kinetic friction between the wall and block A are s = 0.40 and k = 0.30. The pulley is light and frictionless. In the figure, the mass of block X is adjusted until block A descends at constant velocity of 4.75 cm/s when it is set into motion. What is the mass of block X?
 
  A) 6.5 kg
  B) 7.2 kg
  C) 8.0 kg
  D) 8.8 kg
  E) 9.5 kg



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ynlevi

  • Sr. Member
  • ****
  • Posts: 338
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A




Coya19@aol.com

  • Member
  • Posts: 601
Reply 2 on: Jul 29, 2018
Gracias!


amit

  • Member
  • Posts: 364
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

For a complete list of videos, visit our video library