<h3><u>Answer;</u></h3>
= 73 N
<h3><u>Explanation</u>;</h3>
Using the formula
2 T cos(30°) = w
Where; T is the tension on each string, while w is the weight of the box given by mg
Therefore;
W = 2Tcos 30°
= 2 × 42 cos 30°
= 84 cos 30°
= 72.74
<u> ≈ 73 N</u>
Answer: 2.541884 meters
Explain:
Formula: s = 0.5 * g * t^2
Time of fall (t) is 0.72 while the gravitational acceleration rate is (9.80665m/s^2).
