CHAPTER 11 : Equilibrium and Elasticity

CHEE ZI QING A20SC0043

The Conditions for Equilibrium

Solving Statics Problems

Stability and Balance

Elasticity; Stress and strain

Fracture

Trusses and Bridges

Arches and Domes

Torque,τ net=o

Fnet=0

Force negative means opposite direction

stable equilibrium = return to a desired position or trajectory following a disturbance

at tipped= unstable

Hooke's law, F = kx

Young Modulus(N/m^2) image

Shear Modulus image

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Bulk Modulus image

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a things will fracture if stress too big

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The steeper the arch, the less the horizontal component of the force needed

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