Cu06997 lecture 2_answer
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This document discusses concepts related to forces, densities, and fluid pressures. It defines key terms like force, weight, gravity, density of water and soil. It also discusses concepts like buoyancy, Pascal's law, and calculating fluid pressure. It provides an example problem about calculating forces on walls and bottom of a water tank based on the pressure, density and depth of the water.
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![Newton Force F= m . g
F= Force [N]
m=Weight [Kg]
g=earths gravity = ± 10 [m/s2]
Water
m = ρ . V [kg/m3] . [m3]=[kg]
ρ fresh water =1000 [kg/m3]
ρ salt water =1025 [kg/m3]](https://image.slidesharecdn.com/cu06997lecture2answer-130218020746-phpapp01/85/Cu06997-lecture-2_answer-1-320.jpg)
![Exercise buoyancy [Opdrijving]
Will buoyancy [opdrijving] occur????
+6 m NAP
ground water level +5 m NAP
5m
0,20 m
Culvert
3m
Empty
0 m NAP
ρ concrete=2400 [kg/m3] cross-section
ρ soil=1600[kg/m3]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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3. Ten sample problems are worked through as examples of applying the definitions and concepts to calculations involving forces, densities, pressures, temperatures, and manometers.
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This document contains 20 multiple choice problems related to mechanical engineering. The problems cover topics such as fluid mechanics, thermodynamics, heat transfer, and other mechanical engineering principles. They involve calculations related to things like tank volumes, pressure differences, flow rates, heat transfer between substances, and more. The questions provide relevant equations, known values, and ask the reader to determine unknown values or temperatures based on the given information.
Problemas resueltos-cap-14-fisica-sears-zemansky
This document contains 13 physics problems related to fluid mechanics and pressure from the textbook "University Physics" by Sears Zemansky. The problems cover topics such as density, pressure, buoyancy, fluid flow, and viscosity. They involve calculating quantities like volume, pressure, density and force for various objects, liquids and gasses using the relevant physics equations. The problems are presented in Spanish and include the calculations and reasoning to arrive at the solutions.
ME 12 Assignment No. 1
This document contains a thermodynamics assignment with 10 problems related to concepts like specific weight, acceleration due to gravity at different elevations, pressure and force exerted by fluids, density and specific volume of mixtures, heat transfer between materials, mass and energy balances, and work calculations for steam turbines. Students are asked to solve these 10 problems and submit their solutions to the given email address by the provided due date.
Cooling tower
A cooling tower uses fillings inside a shell to expose water to circulating air, cooling the water through evaporation. Hot water is pumped in and falls as spray, cooling in the fillings before collecting in the basin. The air picks up moisture, becoming partially saturated. Key equations calculate cooling range, efficiency, vapor pressure, enthalpy, and mass/energy balances to relate water and air temperatures, flows, and properties for tower design and operation.
7.60 ppt batfink energy
1) Batfink falls through a trap door and drops 20 meters, gaining 9800 J of kinetic energy just before hitting the ground.
2) He lands on a spring with a force constant of 700 N/m that compresses 3 meters, storing the 9800 J of energy.
3) Using the spring force and compression, the spring constant is calculated to be 700 N/m.
Miscellaneous Formulas-just to try-1.pptx
The document defines and compares density and specific volume, as well as absolute pressure, gauge pressure, and vacuum pressures. It then provides an example problem calculating whether a wooden log with a given density and volume will float or sink in water based on comparing the log's weight and the buoyant force acting on it.
The Essentials in fluid mechanics
This document provides information about fluid mechanics concepts and units of measurement. It begins by acknowledging the sources of the lecture notes. It then defines key concepts like pressure, density, viscosity, stress, and flow and provides conversion factors between common unit systems. Diagrams are included to illustrate concepts like laminar flow and shear stress. Overall, the document serves as a reference for fluid mechanics terminology, equations, and units.
SPM PHYSICS FORM 4 forces and pressure
Solution:
(a) Pressure at point Q = Height of mercury column x Density of mercury x Gravitational acceleration
= (75 cm) x (1.36 x 104 kg m–3) x (10 m s–2)
= 1.02 x 105 Pa
Question and Answers on Terzaghi’s Bearing Capacity Theory (usefulsearch.org)...
This document contains solved examples of questions on bearing capacity from previous year question papers. It includes 6 questions calculating the ultimate bearing capacity, safe bearing capacity, and size of footing for given soil properties and loading conditions using Terzaghi and general shear failure theories. The properties provided are unit weight, cohesion, friction angle, and bearing capacity factors. Depths, widths, loads, and factors of safety are also given. The step-by-step workings and solutions are shown for each question.
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Mechanical engineer's manual(by. engr. yuri g. melliza)
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Question and Answers on Terzaghi’s Bearing Capacity Theory (usefulsearch.org)...
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Mindert de Vries (mindert.devries@hz.nl)
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Cu06997 lecture 2_answer
- 1. Newton Force F= m . g F= Force [N] m=Weight [Kg] g=earths gravity = ± 10 [m/s2] Water m = ρ . V [kg/m3] . [m3]=[kg] ρ fresh water =1000 [kg/m3] ρ salt water =1025 [kg/m3]
- 2. Exercise buoyancy [Opdrijving] Will buoyancy [opdrijving] occur???? +6 m NAP ground water level +5 m NAP 5m 0,20 m Culvert 3m Empty 0 m NAP ρ concrete=2400 [kg/m3] cross-section ρ soil=1600[kg/m3]
- 6. Exercise Pascal’s law The tank contains fresh water. Width of the tank is 2,44 m. Question 1 Calculate the force on wall AB and CD Question 2 Calculate the force on bottom BC Question 3 Calculate the total weight of the water and compare this water the answer of 2. Explain the difference.
- 7. General pressure intensity Pressure [Pa=N/m2] Force [N] Area on which the force acts [m2] Fluid Pressure at a point 𝐹 𝜌∙ 𝑔∙ 𝐴∙ 𝑦 𝑝= = = 𝜌∙ 𝑔∙ 𝑦 𝐴 𝐴