Chapter 1 - Kinematics And Dynamics Flashcards

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1
Q

SI unit of force

A

Newton (N)

= (kg*m)/s^2

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2
Q

Équation for gravitational force

A

Fg = (Gm1m2)/r2

G= 6.67x10^-11

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3
Q

Accélération

A

∆V/∆t

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4
Q

Newton’s first law

A

F = ma = 0

‘Law of inertia’

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5
Q

Newton second law

A

Fnet = ma

An object of mass m will accelerate when the cet or sum of the forces results in some nonzero resultant force

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6
Q

Newtons 3rd law

A

Fab = -Fba

Law of action and reaction

Every action has an equal and opposed reaction

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7
Q

Write out the 4 equations of linear motion

A

V = Vo + at

X = Vot + (at^2)/2

V^2 = Vo^2 + 2ax

X= vt

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8
Q

Équations for inclined planes

A

Fparallel = mgsinø

Fperp = mgcosø

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9
Q

Équation for circular motion

A

Fc = (mv^2)/r

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10
Q

Équation for rotational equilibrium

A

Torque = r x F = rFsinø

r = lever arm length

F = magnitude of force

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11
Q

Absolute pressure. What is it and whats the equation?

A

“Hydrostatic pressure”
Total pressure exerted on an object that is submerged in a fluid

P = Po + pgz

Po = pressure at the surface

z = depth of object

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12
Q

Gauge pressure

A

Pgauge = P - Patm = (Po + pgz) - Patm

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13
Q

What is hydrostatics

A

Study of fluids at rest and forces and pressures associated with standing fluids

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14
Q

Archimedes’ Principle

A

Buoyancy : a body wholly or partially immersed in a fluid will be buoyed upwards by a force equal to the weight of the fluid that it displaces

Fbouy = pfluidVfluiddisplacedg

        = pfluid*Vsubmerged*g

***remember to use the density of the fluid !!

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15
Q

Pascal’s principle

A

If an external pressure is applied to a confined fluid, the pressure at every point within the fluid increases by that amount

Pout = Pin

P = F1/A1 = F2/A2

F2 = F1 (A2/A1)

volume always the same!

V = A1D1 = A2D2

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