Object slides down frictionless ramp. Find acceleration.

AI Thread Summary
To find the acceleration of an object sliding down a frictionless ramp, the angle of incline can be calculated using the inverse sine of the height divided by the length of the ramp, resulting in an angle of approximately 2.9 degrees. The horizontal component of the ramp is calculated using the cosine of this angle. Newton's second law is then applied to determine the acceleration down the ramp, which is influenced by the gravitational force acting parallel to the incline. The discussion emphasizes that while mass is a factor in physics, it may not be necessary for this particular calculation since the ramp is frictionless. Understanding these principles is essential for solving kinematics problems involving inclined planes.
fergus123
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Homework Statement



Hello, this is my first post here.
I am trying to find acceleration for an object sliding down a ramp. I have the length + height of ramp.

Height: 6.5cm
Length: 130 cm

Homework Equations



I'm at loss here. Vectors are included and this is a kinematics question.

The Attempt at a Solution



Inverse Sin of 6.5/130 give me 2.9 degrees.
Cos(2.9) x 130 is 129.8cm for the horizontal component.
 

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Thanks, for the answer, but my question doesn't have mass or friction involved. In elementary level physics.
 
No friction, fine. But all objects have mass. Make use of the link for the no friction case. Maybe you won't need to know the mass.
 

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