Calculation of the line of action of a force on a sailboat mast The force exerted by the wind on the mast varies with the height z above the deck....
Calculation of the line of action of a force on a sailboat mast
The force exerted by the wind on the mast varies with the height z above the deck.
The line of action of the force can be determined by finding the point where an equal and opposite force would have the same effect on the mast.
The equation for the line of action of the force involves the calculation of a moment of the force about a certain point.
The moment of the force is calculated as the product of the force and the perpendicular distance from the point to the line of action of the force.
a) Statements I and II are correct.
b) Statements II and III are correct.
c) Statements III and IV are correct.
d) All statements are correct.
The force exerted by the wind on the mast varies with the height z above the deck.
The line of action of the force can be determined by finding the point where an equal and opposite force would have the same effect on the mast.
The equation for the line of action of the force involves the calculation of a moment of the force about a certain point.
The moment of the force is calculated as the product of the force and the perpendicular distance from the point to the line of action of the force.
a) Statements I and II are correct.
b) Statements II and III are correct.
c) Statements III and IV are correct.
d) All statements are correct.
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Ed 
A alternativa correta é a letra B) Statements II and III are correct. A afirmação II é verdadeira, pois a linha de ação da força pode ser determinada encontrando o ponto onde uma força igual e oposta teria o mesmo efeito no mastro. A afirmação III também é verdadeira, pois a equação para a linha de ação da força envolve o cálculo de um momento da força em relação a um determinado ponto, que é calculado como o produto da força e da distância perpendicular do ponto à linha de ação da força.
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