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

Author Question: A box of mass m is placed on an incline with angle of inclination . The box does not slide. The ... (Read 35 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
on: Jul 28, 2018
A box of mass m is placed on an incline with angle of inclination  . The box does not slide. The magnitude of the frictional force in this case is:
 a. s mg sin .
  b. mg cos .
  c. mg sin .
  d. not given.

Question 2

A box is to be moved across a level surface. A force of magnitude 200 N may be applied at an angle of 30 below the horizontal to push the box or at an angle of 30 above the horizontal to pull the box, either application sufficient to overcome friction and move the box. Which application will cause the box to have the greater acceleration?
 a. the one below the horizontal
  b. the one above the horizontal
  c. both give equal acceleration
  d. more information is needed


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dmurph1496

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

b


nelaaney

  • Member
  • Posts: 560
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

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 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Intramuscular drug administration: (c) the needle is inserted at a 90° angle: Source: Pearson Educat Intramuscular drug administration: (c) the needle is inserted at a 90° angle: Source: Pearson Educat
Slide along the bottom of the foot with the fist. Apply from the ball of the foot to the heel. Use ... Slide along the bottom of the foot with the fist. Apply from the ball of the foot to the heel. Use ...
Apply stroking from ankle to knee, using both palms to slide along the calf muscles. If hands will ... Apply stroking from ankle to knee, using both palms to slide along the calf muscles. If hands will ...
How to find the average atomic mass of an element How to find the average atomic mass of an element
A 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting ... A 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting ...
Cocaine, C17H21NO4, in urine can be confirmed by mass spectroscopy at a concentration of 150 ... Cocaine, C17H21NO4, in urine can be confirmed by mass spectroscopy at a concentration of 150 ...
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library