Ablock of mass m is placed on an inclined surface. the incline makes an angle theta with respect to the horizontal. what are the magnitude and direction of the normal force exerted on the block by the incline? group of answer choices magnitude =latex: mgcos\theta m g c o s θ , direction: perpendicular to the incline surface magnitude = latex: mgsin\theta m g s i n θ , direction: perpendicular to the incline surface magnitude =latex: mgcos\theta m g c o s θ , direction: perpendicular to the surface of the earth magnitude = mg, direction: perpendicular to the incline surface magnitude = mg, direction: perpendicular to the surface of the earth