1. The problem statement, all variables and given/known data (a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force vector F at an angle θ with respect to the horizontal. The coefficient of kinetic friction between block and table is μk. Is the force exerted by friction equal to μkmg? ANSWER = No (Correct ) Enter the expression that describes only the magnitude of the force exerted by friction. (Use any variable or symbol stated above along with the following as necessary: g and F for the magnitude of vector F .) fk = ? (b) How much work is done by the friction force and by vector F ? (Don't forget the signs. Use any variable or symbol stated above along with the following as necessary: g and F for the magnitude of vector F .) Wfk = ? WF =? 3. The attempt at a solution fk= μk (mg-Fsin(θ)) Wfk=-(cos(θ))d WF=mg(sin(θ))d *d= distance I'm struggling coming up with the correct equations. Any help is appreciated.