Essays on Potential Energy

Part 1

The equipment used to assess VO2 max and lactate threshold includes the h/p/cosmos Pulsar 5.0 treadmill, the Cosmed Quark PFT Ergo testing equipment, the Cosmed V2 mask, the HR Belt Cosmed-ANT (w/transmitter), and a computer.

Calibration Processes

The preliminary step for the experiment is to perform the calibration of the equipment. The treadmill velocity should be calibrated by marking a point and noting the time it takes to complete a predetermined number of revolutions. This time is used to calculate the velocity by using the length of the belt, which should also be measured. These calibrations should be performed at different ...

Introduction

The population growth of the cities in the world requires the perform of infrastructure works every day to guarantee the supply of clean and potable water to a population that needs every day more water for food, leisure, and living. But the supply water to human conglomerates has resulted in the removal of most of it, once it has been used and therefore contaminated. The previous requires that the civil engineer took into account some elements that allow them through studies and specialized satisfy effective and sustainable manner the need to have water service, providing it uninterruptedly, in quantity ...

The hydrodynamic power is the result of the transformation of the potential energy of water, that is, a column or height difference of water that moves a primary machine that generates mechanical energy. The mechanical energy later is transformed in electricity, thanks to the use of a generator.

Main components of the hydroelectric plants

A large dam to store water, provide a constant flow of water and accumulate potential energy in the form of hydraulic load. A large capacity of the dam gives reliability to the hydroelectric plant with a guarantee of a constant flow of water to the turbines. An abduction which is a ...

1. The dimensions are converted from cm to m: 10 cm ×1 m100 cm=0.1 m 5 cm ×1 m100 cm=0.05 m

The volume of the water in the tank is:

V=0.1×0.1×0.05=0.0005 m3

The mass of the water is:

m=ρV=1000kgm3×0.0005 m3=0.5 kg 2. g=9.81ms2 a. The force F exerted by the water is: F=mg=0.5 kg9.81ms2=4.905kg∙ms2=4.905 N b. The force F is exerted downwards, towards the centre of the Earth. c. The water would want to move downwards because of gravity. d. The height h is converted to meters:5 cm ×1 m100 cm=0.05 m

The potential energy U is:

U=Fh=4.905 N0.05 m=0.2453 N∙m=0.2453 J 3. The volume of the olive oil is assumed to be ...

Introduction

Track and field is a set of games in various levels that includes games such as long distance running, sprint, javelin throw and shot put. The history of these games is believed to have originated from Greece (Weebly). In these games, there are several concepts of physics that are applied with the most notable ones being speed, force, kinetic/potential energy, acceleration, friction and momentum.

Speed

This can be defined as the act of moving fast or in a swift manner. The equation is given by Speed = Distance travelled/Time. If one is running on a track during a competition, it is ...

Introduction

The experiment was conducted to examine the validity of Bernoulli’s Principle as applied to the flow of water in a tapering circular duct. It employed the use of Bernoulli’s Theorem Demonstration Apparatus, hydraulics bench and a stopwatch to gather relevant data. The volume of water was measured and its flow was timed using the stopwatch. The two values were used to calculate the flow rate of the fluid. Additionally, the manometer readings were collected and used to compute the velocity of the fluid at each tapping position. The values were used to calculate the theoretical velocity head ...

Question #8

Angular momentum refers to the resistance of a rotating body to change its spin rate or direction of spin. Angular momentum can be determined by the product of the moment of inertia and the angular velocity, or by the cross product of the moment arm and the product of the mass and velocity vector of the body (Sellers 2004, 112-113). For this particular problem, we will use the latter to determine the angular momentum. H=R×mV H=0.5 m×0.25 kg2 ms H=0.25 kg∙m2s Since angular momentum is conserved, the angular momentum of the system every point in time ...

Engineering

Retrus, Maimane and Mosoallbisi (2014) agree that mechanical energy is the total sum of Kinetic and Potential energies. Kinetic energy is the energy possessed by an object because of its movement. Potential energy on the other hand is that energy which is stored by an object as a result of its position. There are two types of potential energy, elastic and gravitational and the one present in a swing and pendulum is gravitational potential energy. Its presence is because neither of them has a spring to produce elastic potential energy and they both work in accordance with the laws ...

An automotive engine is a propulsion system responsible for moving automobiles from one place to another. An engine converts energy from a fuel or a battery to the mechanical energy used to spin the wheels, thus setting a vehicle in motion. There are different types of engines used in the automotive industry today. These include internal combustion engines and electricity driven vehicles. The internal combustion engines burn fuels such as petrol, diesel, natural gas or propane. Electric engines are fitted with electromagnetic motors that are powered by electric currents from storage batteries on the vehicle. The sole purpose of ...