Small objects are released from rest at A and slide down the smooth circular surface of radius

$h$ to a conveyor B$.$ Determine the expression for the normal contact force $N$ between the

guide and each object in terms ofand velocity$($v$).$

$N=m(3$gsin$-\frac{v^2}{h})$

$N=m(gsin-\frac{v^2}{h})$

$N=m(gsin+\frac{v^2}{h})$

$N=m(-$gsin$+\frac{v^2}{h})$