- #1
Benjamin_harsh
- 211
- 5
- Homework Statement
- A 10 kg box rest on a 30 degree incline and begins to slide down. What is the acceleration if no friction is present?
- Relevant Equations
- ##m.a_{x} = mg.sinθ## , ##a_{x} = 10.sin(30)##
There is a component the weight force that accelerates the box downwards, ##F_{g}##, which is equal to mg.sinθ of below triangle.
##F_{g}= mg.sinθ##
##F_{N}= mg.cosθ##
##\sum F_{X} = F_{g}##
##m.a_{x} = mg.sinθ##
##a_{x} = 10.sin(30)##
##a_{x} = \large \frac {1}{2}##
##a_{x} = 5 \large \frac {m}{sec^2}##
Why there is no force resolutions at ##30^0##? I mean why resolutions taken at below the box?