Thursday

August 28, 2014

August 28, 2014

Posted by **stacy** on Friday, November 27, 2009 at 9:42pm.

a) What are the x and y components of the resultant force on the sled assuming the snow is frictionless?

b) What is the magnitude of the acceleration of the sled? [this one i can do if i can get a.]

c) What is the angle the acceleration of the sled makes with due North (using + for the east side and - for the west side)

- physics vectors w/angles -
**drwls**, Saturday, November 28, 2009 at 7:16am(a) The x (East) component of the resultant force is:

Fx = 5.18 sin 20 - 11.15 sin 33.7 + 10.0

Add them up.

The y (North) component is:

Fy = 5.18 cos 20 + 11.15 cos 33.7

(There is no wind component)

Add them up.

(b) Use the Pythagorean theorem.

F = sqrt[(Fx)^2 + (Fy)^2]

a = F/m

(c) arctan Fx/Fy

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