- #1
I_BeLeaf87
- 4
- 0
I have this assignment to do and I am stuck on finding the force of friction acting on a curling rock.
The mass is 19Kg and the acceleration is -0.2m/s^2
I calculated the force applied using F = ma
This gave me -3.8N
I let negative rep force applied
positive rep force of friction
Therefore I have 3.8N [forward]
I am not sure if I am right from here on. I think I calculated the normal force or so.
I used
Fn = ma + mg
My answer for the force of gravity was 190N so then I added the 2 together and got 186.2 since the Force applied was negative. What I find awkward is that 186.2 N is the actual Force of gravity but due to sig digits, I rounded to 2 sig digits. It is here I am lost. How will I be able to calculate the force of friction?
I don't know the co-effecient of friction either. We also need to solve for that but I think I know how to once I solve for friction. Any help will be appreciated.
The mass is 19Kg and the acceleration is -0.2m/s^2
I calculated the force applied using F = ma
This gave me -3.8N
I let negative rep force applied
positive rep force of friction
Therefore I have 3.8N [forward]
I am not sure if I am right from here on. I think I calculated the normal force or so.
I used
Fn = ma + mg
My answer for the force of gravity was 190N so then I added the 2 together and got 186.2 since the Force applied was negative. What I find awkward is that 186.2 N is the actual Force of gravity but due to sig digits, I rounded to 2 sig digits. It is here I am lost. How will I be able to calculate the force of friction?
I don't know the co-effecient of friction either. We also need to solve for that but I think I know how to once I solve for friction. Any help will be appreciated.