Is This Physics Calculation Correct for a Force Problem?

[dsptl]

Force Problem (urgent)

http://maxupload.com


Attempt:

Y: Fnet = 0
n - wcos40 = 0
n = wcos40

X: Fnet = ma
1N + wsin40 -Fk = ma
1N + wsin40 -(.2)(wcos40) = ma
1N + 1.29 - .306 = .2a
a = 9.9 m/s2

I am doing it right way. I asked b/c i feel something is wrong...

Please help its urgent

 

[alphysicist]

Attempt:

Y: Fnet = 0
n - wcos40 = 0
n = wcos40

X: Fnet = ma
1N + wsin40 -Fk = ma
1N + wsin40 -(.2)(wcos40) = ma
1N + 1.29 - .306 = .2a
a = 9.9 m/s2

I am doing it right way. I asked b/c i feel something is wrong...

Please help its urgent

Your approach seems right to me. I noticed you were using g=10m/s² for the acceleration due to gravity instead of the more correct g=9.8m/s²; is that value what your class is supposed to be using?

 

[baba89]

!

Hi there,

I understand that you are working on a force problem and are feeling unsure about your calculations. It's great that you are reaching out for help!

Based on the information you provided, it looks like you are on the right track with your calculations. However, it's always a good idea to double check your work and make sure that all of your equations are set up correctly. Additionally, if you are still feeling unsure, it might be helpful to ask a classmate or your teacher for clarification or assistance.

I know it can be stressful when a problem is marked as urgent, but remember to take a deep breath and approach the problem step by step. I'm sure you will be able to figure it out! Good luck!