- #1
kppowell
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Edit: Sorry, i just realized i posted this in the wrong section.
Ok so I was assigned this project to compare accelerations of a 200g block on an inclined plane to that of a marble. My teacher also wanted me to derive formulas to solve acceleration for any given frictional force, mass, and angle. I used g*Sin(angle)=a for the marble since there is little to no friction and it worked perfect.
However the formula i derived for the block is not working like i thought it would.
I started with Fx=ma
u=coefficient of Friction
Frictional Force (Ff)= u*Fn or mass*gravity*Cos(angle) <----Right?
From here i went on to get this:
Acceleration = {u*mass*gravity*Cos(angle) - mass*gravity*Sin(angle)} / Mass
However this formula is giving me decreasing accelerations as the angle increases.
Please Help! What am i doing wrong, and what formula will give me acceleration for the block for any given frictional force, angle, and mass.
Ok so I was assigned this project to compare accelerations of a 200g block on an inclined plane to that of a marble. My teacher also wanted me to derive formulas to solve acceleration for any given frictional force, mass, and angle. I used g*Sin(angle)=a for the marble since there is little to no friction and it worked perfect.
However the formula i derived for the block is not working like i thought it would.
I started with Fx=ma
u=coefficient of Friction
Frictional Force (Ff)= u*Fn or mass*gravity*Cos(angle) <----Right?
From here i went on to get this:
Acceleration = {u*mass*gravity*Cos(angle) - mass*gravity*Sin(angle)} / Mass
However this formula is giving me decreasing accelerations as the angle increases.
Please Help! What am i doing wrong, and what formula will give me acceleration for the block for any given frictional force, angle, and mass.
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