This topic contains a solution. Click here to go to the answer
« previous next »

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 32 times)

Coya19@aol.com

  • Hero Member
  • *****
  • Posts: 601
on: Jul 29, 2018
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
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


Coya19@aol.com

  • Member
  • Posts: 601
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

31809pancho

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

True-color view of Mars seen through NASA's Hubble Space Telescope in 1999 True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
Microscopic View of Coleous Shoot Microscopic View of Coleous Shoot
Side view Side view
Anterosuperior view of pelvic girdle Anterosuperior view of pelvic girdle
I need help soon some questions attached I need help soon some questions attached
Allyl isothiocyanate, ball and stick model Allyl isothiocyanate, ball and stick model
Video: Carpal Tunnel Syndrome

For a complete list of videos, visit our video library