Part A Determine the smallest radius r of each spherical balloon that is needed to lift the boat. Neglect the mass of air and of the balloon for the calculation required for the lift. Express your answer to three significant figures and include the appropriate units. Tmin= μÀ Value O Units Part B What is the mass of air in each balloon the air and water temperature is 12°C? The balloons are at an average depth of 20 m. The gas constant for air is R = 286.9 J/(kg K Express your answer to three significant figures and include the appropriate units. μA ? ?

Part A Determine the smallest radius r of each spherical balloon that is needed to lift the boat. Neglect the mass of air and of the balloon for the calculation required for the lift. Express your answer to three significant figures and include the appropriate units. Tmin= μÀ Value O Units Part B What is the mass of air in each balloon the air and water temperature is 12°C? The balloons are at an average depth of 20 m. The gas constant for air is R = 286.9 J/(kg K Express your answer to three significant figures and include the appropriate units. μA ? ?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The figure shows the water pressure acting on the sides of a dam that is 20-m long. Determine the resultant forceof the water pressure acting on the dam and find the point where it crosses the y-axis
If the center of gravity of a ship in the upright position is 10m above the center of gravity of the portion under water, the displacement being 1000 metric tons, and the ship is tipped 30 causing the center of buoyancy to shift sidewise 8m. a) Is the moment righting or overturning and why? B) What is the value of this moment in kg m?
3. A vertical piston-cylinder device on the left containing a gas has a mass of 40 kg and a cross-sectional area of 0.012 m². The local atmospheric pressure is 95 kPa, and the gravitational acceleration is 9.81 m/s². Determine the absolute pressure (kPa) inside the cylinder. (2 decimal)
A right circular cylindrical container 3m in diameter and 4 m high is ½ full of water. When rotated about its vertical axis at the rate of 5 radians per second, what is the volume of the paraboloid formed by the rotation of the vessel? Unit of the Correct Answer: m^3 An open cylindrical tank one meter in diameter and 3 m high is 3/5 full of water. If the tank is rotated about its vertical axis, what speed should it have in rpm so that the water could just reach the rim of the tank. Unit of the Correct Answer: rpm
A hollow cylinder 2.46-m in diameter and 7-m long weighs 3,159 N. How many cubic meters (m3) of metal weighing 112 kN/m3 must be placed inside the cylinder such that 2.9 m. of the cylinder is protruding above the liquid surface? The hollow cylinder is submerged in a liquid that has a specific gravity of 2.3. Round off to four decimal places.
A hollow cylinder 1.55m in diameter and 7m long weighs 3,055N. How many cubic meters of metal weighing 105 kN/m3 must be placed inside the cylinder such that 2.6m of the cylinder is protruding above the liquid surface? The hollow cylinder is submerged in a liquid that has a specific gravity of 2.8.
The flow of water from a reservoir is controlled by a 4-m-wide L-shaped gate hinged at point A as shown in the figure. If it is desired that the gate open when the water height is 5 m, determine the weight W.
The cylinder in the figure below, having a mass of 100 kg is to besupported by the cord that wraps over the pipe. Determine the largest vertical force F that can be applied to the cord without moving the cylinder. The cord passes two times over the pipe (take β = 540° and μS = 0.3).
An object with a mass of m=4.7 kg is attached to the free end of a light string wrapped around a reel of radius R=0.270 m and a mass of M=3.00 kg. The reel is a solid disc, free to rotate in a vertical plane about the horizontal axis passing through its center as shown in figure below. The suspended object is released from rest 7.00 m above the floor. Determine tension in the string. Determine the magnitude of the acceleration of the object. Determine the speed with which the object hits the floor.
Figure 7 shows a pump partially submerged in oil (sg=0.90) and supported by springs. If the total weight of the pump is 14.6 lb and the submerged volume is 40 in3 , calculate the supporting force exerted by the springs.
Consider a hydraulic jack being used in a car repair shop, as in the figure. The pistons have an area of Ap= 0,8 cm? and A= 0.04 m2, Hydraulic oil with a specific gravity of 0.870 is pumped in as the small piston on the left side is pushed up and down, slowly raising the larger piston on the right side. A car that weighs 13,000 N is to be jacked up. At the beginning, when both pistons are at the same elevation (h= 0), calculate the force F+ in newtons required to hold the weight of the car. 1. What height of mercury column will cause a pressure of 680 kPa? Use sg of mercury equals to 13.6 2. Determine the pressure in a vessel of mercury, specific gravity 13.6, at a point 20 cm below the surface. Express the answer in kN/m2.
Calculate the buoyancy force acting on a partially immersed boat (V = 5.0 m3). The density of water is 1000 kg/m3 .