25. ПЛАВАННЯ СУДЕН. ПОВІТРОПЛАВАННЯ. ЗАДАЧІ ТА ТЕОРІЯ З В. БАР'ЯХТАР, 2024 Р.

NAVIGATION OF VESSELS. AERONAUTICS. PROBLEMS AND THEORY WITH V. BARYAKHTAR, 2024 Problems completed: 1. In fresh water, a vessel displaces 15,000 m³ of water. Determine: a) the full displacement of the vessel; b) the weight of the cargo, if the vessel's own weight is 50 MN. 2. What is the largest mass of cargo that can be transported on a raft, if the mass of the raft is 100 kg and its volume is 1 m³? 3. A helium ball weighing 100 g pulls a thread with a force of 2 N. Determine: a) the force of gravity acting on the ball; b) the Archimedean force acting on the ball; c) the lifting force of the ball; d) the mass of the cargo that the ball can lift. 4. Will the buoyant force acting on the ship change when the ship moves from the river to the sea? Will the draft of the ship change? Justify your answer. 5. In the river, the ship displaces 20,000 m³ of water. How much will the volume of water displaced by the ship change if it moves from the river to the sea? 6. The density of air is 1.29 kg/m³. What should be the density of warm air inside the balloon so that the balloon starts to rise? The volume of the balloon is 500 m³, the mass of the shell and cargo is 150 kg. 7. In which body of water will the same boat have the greatest capacity: a) in Lake Svityaz; b) in the Mediterranean Sea; c) in the Black Sea; d) in Lake Kunigunda,