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# Lecture 1 - Engineering Mechanics Statics Engineering...

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Engineering Mechanics: Statics Mechanics is the branch of the physical sciences d ith th t t f t ti f b di concerned with the state of rest or motion of bodies subjected to forces.

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Engineering Mechanics • Mechanics Mechanics – Rigid-body mechanics • Dynamics – the study of objects in motion Dynamics – the study of objects in motion – F = ma Statics - the study of objects in equilibrium – Also F = ma, but a = 0 – Deformable-body mechanics – Fluid mechanics
Newton’s Laws Newton s Laws 1 st Law – If an object is in motion, it will remain in motion. If an object is at rest, it will remain at rest, unless a force acts upon it. When the sum of forces acting on an object is zero, the object will remain at rest if initially at rest. 2 nd Law – When the sum of forces acting on an object is not zero, the sum of the forces is equal to the product of the mass and its acceleration.

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