(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A block of mass 2kg is on an inclined plane and held steady. The coefficient of static frictionubetween the block and the plane is 0.5. Determine whether or not the block moves when released if the angle the plane makes with the horizontal is

(a) 20 degrees

3. The attempt at a solution

to find n i did this:

2*10*cos20 = 0.94

so friction is 0.47

then i did this:

2*10*sin20 - 0.47 = 6.37

so acceleration is 6.37/2 = 3.19m/s^2

so it looks like the block does move when tilted by 20 degrees...

but i feel like i got quite a big number for the acceleration, am i doing something wrong? am i supposed to approach this question differently?

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# Homework Help: Friction on a black on an inclined plane

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