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Unformatted text preview: Normal force cont When the body presses against the surface (support), the surface deforms and pushes on the body with a normal force ( F N ) that is perpendicular to the surface The nature of the normal force reaction of the molecules and atoms to the deformation of material Example: Pulley and Inclined Plane A block of mass m 1 , constrained to move along a plane inclined at angle to the horizontal, is connected via a massless inextensible rope that passes over a massless pulley to a second block of mass m 2 . Assume the block is sliding up the inclined plane. The coefficient of kinetic friction is k . Assume the gravitational constant is g . Calculate the acceleration of the blocks. Solution: Pulley and Inclined Plane Coordinate system Free body force diagrams Solution: Pulley and Inclined Plane Constraint: Object on inclined plane: Suspended Object: Solution: T- m 1 g sin - k m 1 g cos = m 1 a 1 1 k 1 : sin T m g f m a -- = i 1 1 : cos N m g -...
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