force – finding tension in string

1. The problem statement, all variables and given/known data

While driving in your car, you notice that the string holding the fuzzy dice to your
rear-view mirror makes an angle of θ = 30° with respect to the vertical. The mass of the
fuzzy dice is 0.15 kg. Consider the fuzzy dice to be in equilibrium during this situation. Find the tension in the string.

2. The attempt at a solution

Tcosθ = mg => T = mg/cosθ
= (0.15 kg)(9.8 m/s2)/cos30°
= 1.7 N

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