Question

A 89 kg object is suspended from 2 cables, with an angle of 120 degrees between them. What is the
tension on each cable? (Assume each cable is at an equal angle above the horizontal) Answer in
Newtons.

Answer 1

→ The tension on the cable is 890 N.

The free body diagram is drawed below. Applying the second law of newton:

(you have to transpose the T forces to the 'y' axis). After that:

$\Large \text { 2Tcos(60) = 89 \times 10 }$

89 x 10 is the Weight Gravitational force (Mass times gravity). Therefore:

$\Large \text { T = 890 N}$

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