[SOLVED] Simple Physics Mass pulled by a Force 1. The problem statement, all variables and given/known data Two part problem: Part 1: Show by calculations that the mass can not be lifted up from the ground F=27.0 m=3.00kg Angle= 30degrees Part 2: show by calculations whether the mass moves level along the ground, if the coefficient of static friction between the surface and the mass is .750 and the coefficient of kinetic friction is .400 attached is drawing... 2. Relevant equations 3. The attempt at a solution i draw the FBD and get everything in terms of x an y Fx=F cos 30 = m*a; 27.0 cos 30 = m*a; a = 7.79 m/s^2 Fy= Fn sin 30 - m*g = 0 ;Fn = (m*g)/(sin 30) , which equaled 58.8N uhmm... or do i w = m*g; 3.00*9.80 = 29.4 f sin 30 = 13.5 13.5> 29.4 so, obj doesn't move up or down? im confused.... Part 2: F=27.0 m= 3.00kg Fs=.750 Fk=.400 I draw FBD and F cos 30 = 23.4 Fx= F cos 30 - Fk = m*a; a = (27.0 cos 30 -.400)/3 = 7.66m/s^2 so the object moves right?