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

Author Question: A 12-kg mass is placed on a 25.0 incline, and friction keeps it from sliding. The coefficient of ... (Read 269 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
on: Jul 28, 2018
A 12-kg mass is placed on a 25.0 incline, and friction keeps it from sliding. The coefficient of static friction in this case is 0.580, and the coefficient of sliding friction is 0.520 . What is the frictional force in this situation?
 a. 55.4 N
  c. 49.7 N
  b. 107 N
  d. 61.2 N

Question 2

Two objects, A and B, are placed on an inclined plane that can be rotated to different angles of elevation. A starts to slide at twice the angle of elevation that B starts sliding. The respective coefficients for static friction for A and B are mA and mB. Choose the last answer that is correct.
 a. mB > mA
  c. mB = 2 mA
  b. mA > mB
  d. mA = 2 mB


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emilymalinowski12

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


jon_i

  • Member
  • Posts: 549
Reply 2 on: Jul 28, 2018
Wow, this really help

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

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.

The Mass-Luminosity Relation The Mass-Luminosity Relation
Alternate kneading and sliding on the forearm. Knead the forearm muscles with one hand. Apply ... Alternate kneading and sliding on the forearm. Knead the forearm muscles with one hand. Apply ...
Press into points along the neck with your thumb, one side at a time. Apply circular friction to ... Press into points along the neck with your thumb, one side at a time. Apply circular friction to ...
Apply circular friction with both hands to mobilize the scalp. Apply circular friction with both hands to mobilize the scalp.
Mass Wasting Triggers Mass Wasting Triggers
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Video: Protein catabolism (Krebs cycle) and Protein anabolism (protein synthesis)

For a complete list of videos, visit our video library