A claw hammer being used to pull a nail out of a horizontal board. The mass of the hammer is $1\mathrm{.}00$ kg $.$ A force of $150$ N is exerted horizontally as shown, and the nail does not yet move relative to the board. Find

$($a$)$ the force exerted by the hammer claws on the nail

$($b$)$ the force exerted by the surface on the point of contact with the hammer head. Assume the force the hammer exerts on the nail is parallel to the nail.