A boy of mass 45kg sits 109cm to the left of seesaw. Another boy of mass 29000g wants to balance the seesaw. At what distance he needs to sit?

Respuesta :

Answer:

[tex]d_{2}[/tex] = 169 cm

Explanation:

Mass 1 = 45 kg   => Force = 450 N

Mass 2 = 29 kg   => Force = 290 N

According to principle of moments:

=> [tex]F_{1}d_{1} = F_{2}d_{2}[/tex]

Where [tex]F_{1}[/tex] = 450 N, [tex]d_{1}[/tex] = 109 cm and [tex]F_{2}[/tex] = 290 N

=> (450)(109) = 290[tex]d_{2}[/tex]

=> 49050 =  290[tex]d_{2}[/tex]

Dividing both sides by 290

=> [tex]d_{2}[/tex] = 169 cm