{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture-06-08[1] - Normal force cont When the body presses...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
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 ϕ 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 μ k . Assume the gravitational constant is g . Calculate the acceleration of the blocks.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
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 φ - μ k m 1 g cos φ = m 1 a 1 1 k 1 ˆ : sin T m g f m a φ - - = i 1 1 ˆ : cos 0 N m g φ - = j f k = μ k N = μ k m 1 g cos φ 2 2 2
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}