1. The problem statement, all variables and given/known data The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F=0.540mg is then applied at upward angle θ = 21°. (a) What is the magnitude of the acceleration of the block across the floor if (a) s = 0.600 and k = 0.500? (b) What is the magnitude of the acceleration of the block across the floor if s = 0.400 and k = 0.300? 2. Relevant equations F=ma and F=s(N) or F=k(N) 3. The attempt at a solution Well i drew a Free Body Diagram and found the forces in the x and y direction: x: F(s)-Fcos(21)=0 y: mg-Fsin(21)-N=0 Then i solved for F(s)=Fcos(21)=0.54mg(cos(21))=4.94m then i used F=s(N) to solve for N N=8.233m Then i set F=ma and F=s(N) equal and solved for a a=8.233(.500)=4.11 I repeated the same steps for B...but the answers are not correct. Any help at all will be appreciated!