Question

A raft is made of 10 logs lashed together. Each is 56cm in diameter and has a length of 6.1m. How many people can the raft hold before they start getting their feet wet, assuming the average person has a mass of 69 kg? Do not neglect the weight of the logs. Assume the specific gravity of wood is 0.60.

Answer 1

Answer:

n = 87 the number of people can raft hold

Explanation:

The raft is made of 10 logs

No given the information to find the average person assuming

w = 69 kg , wₙ = 0.60

e = 56 cm * 1 / 100 cm = 0.56 m

l = 6.1 m

V = 10 * 6.1m * (0.56m /2) ² π

V = 15.024 m³

m₁ = V * L³ * wₙ + mₙ

m₂ = V * L³

m₁ < m₂

n < V * (1 - wₙ) * L₃ / w

n < 15.024 m³ * ( 1 - 0.60) * 10³ / 69 kg

n ≅ 87

Is the number of maximum people