Answer
(a) $312N$
(b) increase
Work Step by Step
We know that in the given scenario
$Mg+Fsin35^{\circ}-N=0$
$\implies N=Mg+Fsin35^{\circ}$
We plug in the known values to obtain:
$N=(19)(9.81)+(219)(0.5736)$
$N=312N$
(b) Since $N=Mg+Fsin35^{\circ}$, this equation shows us that the normal force is directly proportional to $sin\theta$. Thus, the normal force will increase if the angle is increased.
