A box of mass m is placed on an incline with angle of inclination ...

[nelaaney]

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

[dmurph1496]

Answer to Question 1

c

Answer to Question 2

b

[nelaaney]

Gracias!

[miss_1456@hotmail.com]

TYSM