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1 FORMULARIO DI CINEMATICA DEL PUNTO 1. CALCOLO ...

1 FORMULARIO DI CINEMATICA DEL PUNTO 1. CALCOLO ...

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con: A T = { A A A }<br />

Prodotto vettoriale<br />

C<br />

α<br />

x<br />

y<br />

A<br />

z<br />

⎧B<br />

⎪<br />

⎪<br />

B = ⎨B<br />

⎪<br />

⎪<br />

⎪⎩<br />

B<br />

B<br />

x<br />

y<br />

z<br />

⎡ i j k ⎤<br />

⎢<br />

⎥<br />

⎢<br />

⎥<br />

C = A ∧ B = det ⎢Ax<br />

Ay<br />

A ⎥<br />

z = i(<br />

Ay<br />

Bz<br />

− AzBy<br />

) − j(<br />

AxBz<br />

− AzBx<br />

) + k(<br />

AxBy<br />

− Ay<br />

Bx<br />

) (3)<br />

⎢<br />

⎥<br />

⎢<br />

⎥<br />

⎢Bx<br />

By<br />

B ⎥<br />

⎣<br />

z ⎦<br />

⎧ Ay<br />

Bz<br />

− AzBy<br />

⎫<br />

⎪<br />

⎪<br />

⎪<br />

⎪<br />

⎨−<br />

AxBz<br />

+ AzBx<br />

⎬ = componenti lungo gli assi x, y, z del vettore prodotto vettoriale<br />

⎪<br />

⎪<br />

⎪<br />

⎪<br />

⎩<br />

AxBy<br />

− AyB<br />

⎭<br />

C = A ⋅ B sin<br />

( α)<br />

Prodotto misto: ( A ∧ B)<br />

× C = ( A × B)<br />

∧ C<br />

Doppio prodotto vettore: A ∧ ( B ∧ C)<br />

= ( A × C)<br />

⋅ B - ( A × B)<br />

⋅ C<br />

Vettore velocità angolare: = { i j k}<br />

⋅ ω = ω ⋅ i ω ⋅ j + ω ⋅ k<br />

⎫<br />

⎪<br />

⎪<br />

⎬<br />

⎪<br />

⎪<br />

⎪⎭<br />

⎧ωx<br />

⎫<br />

⎪ ⎪<br />

⎪<br />

⎪<br />

ω ⎨ y ⎬ x + y z<br />

(4)<br />

⎪ ⎪<br />

⎪ ⎪<br />

⎪⎩<br />

ωz<br />

⎪⎭<br />

2

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