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Alice is going on a picnic and is aware that it will be easier to carry the picnic basket if it balances at the center where the handle is attached. She has placed a 1.65-kg container of potato salad at one end and a 0.675-kg package of hot dogs at the other end of a 52.0-cm long basket. Determine where she should place a 2.35-kg container of lemonade so that the basket balances at its center.

Respuesta :

Answer:

10.787 cm towards the 0.675 kg mass or 41.213 cm from the 1.65 kg mass.

Explanation:

[tex]m_1[/tex] = Mass of potato salad container = 1.65 kg

[tex]m_2[/tex] = Mass of lemonade container = 2.35 kg

[tex]m_3[/tex] = Mass of hot dog package = 0.675 kg

l = Length of basket = 52 cm

x = Location of lemonade container

When the mass is balanced along the center of mass the following equation applies

[tex]-m_1\frac{l}{2}+m_2x+m_3\frac{l}{2}=0\\\Rightarrow x=\frac{m_1\frac{l}{2}-m_3\frac{l}{2}}{m_2}\\\Rightarrow  x=\frac{1.65\frac{0.52}{2}-0.675\frac{0.52}{2}}{2.35}\\\Rightarrow x=0.10787\ m[/tex]

The lemonade container should be placed at 10.787 cm towards the 0.675 kg mass or 41.213 cm from the 1.65 kg mass.

The place she should place the 2.35-kg container of lemonade so that the basket balances at its center is = 10.787 cm towards the mass of 0.675kg.

Calculating the center of gravity

The length of the basket= 52 cm= 0.52m

The center of gravity length= 26cm = 0.26m

Mass of the container of potatoes (M1)= 1.65kg

Mass of hot dogs (M2)= 0.675kg

Additional mass of lemonade (M3) = 2.35kg

Click wise rotation= Anticlockwise rotation

Fcw(m× d) = Facw (m ×d)

The distance to place the additional mass would be calculated from the part with a smaller mass,

(0.675× 0.26) + ( 2.35 × ?) = 1.65× 0.26

0.1755 + 2.35x = 0.429

2.35x = 0.429 - 0.1755

2.35x = 0.2535

X = 0.2535/2.35

X = 0.10787m = 10.787cm

Therefore, she should place the 2.35-kg container of lemonade so that the basket balances at its center is = 10.787 cm towards the mass of 0.675kg.

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