When an object is sitting on a sloped surface that is tilted up at an angle of 30° from the horizontal, how do you calculate the component of its weight that is parallel to the surface.

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter4: Forces In One Dimension
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please please help me on these!! i am stuck please help

When an object is sitting on a sloped surface that is tilted up at an angle of 30° from the horizontal,
how do you calculate the component of its weight that is parallel to the surface.
use mgcos (30°)
O use mgtan (30°)
use mgsin (30°)
Transcribed Image Text:When an object is sitting on a sloped surface that is tilted up at an angle of 30° from the horizontal, how do you calculate the component of its weight that is parallel to the surface. use mgcos (30°) O use mgtan (30°) use mgsin (30°)
What are the x- and y-components of acceleration for an object that is sitting still?
ax =
ax
=
0, ay = 0
:0, ay
ax = 0, ay
= -9
= 9
Transcribed Image Text:What are the x- and y-components of acceleration for an object that is sitting still? ax = ax = 0, ay = 0 :0, ay ax = 0, ay = -9 = 9
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