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At what point during a pole-vaulters jump is his gravitational potential energy the greatest?
His gravitational potential energy is greatest at the highest point in his vault. Viewing this problem ideally (where all outside factors are discarded), the pole vaulter's jump follows a parabolic path, and the vaulter will obviously be the furthest distance from the earth's surface when he reaches the highest point in the parabolic path and begins his descent. The gravitational potential energy of a single object with respect to the earth is given by U = mgh, where U is the energy given in joules, m is the mass of the object, g is the gravitational acceleration on earth (around 9.81 m/s2 toward the earth), and h is the positive distance from the earth's surface. In this problem, mass and acceleration are constant, since ideally, the only force acting on the vaulter is the force of gravity that will bring him back to the ground. Therefore, U is maximized at the highest point in the vault - the vertex of the parabola, halfway between the origin of his jump and the point where he hits the ground.
What else can I help you with?
In a rotation which points are moved the greatest distance?
In a rotation, the points located farthest from the axis of rotation move the greatest distance. This is because the distance traveled by a point during rotation is proportional to its radius from the axis; thus, points farther away have a larger circular path. Consequently, any point at the maximum radius experiences the greatest linear displacement during the rotation.
What statement is supported by the data in the graphs?
The percentage of mice with white fur was greatest during the years of longest snow covers
What is the equation for a falling object?
The equation for the kinetic energy of a falling object is kinetic energy=1/2 an object's mass multiplied by it's speed squared. From this, we can work out the speed. First you need to know its weight and its kinetic energy. The kinetic energy is obtained by working out it's potential energy before it fell (Potential energy= mass multiplied by gravitational pull multiplied by height. Then, at whatever point during the fall, the decrease in potential energy marks the increase in kinetic energy. From then we work out the speed. Example; An object that weighs 8.1 kilograms is 10 metres above the ground. It's potential energy is therefore 8.1x10(gravitational pull on earth is always 10)x10. So it has a potential energy of 810 joules. it falls 5 metres, so it's potential energy is 8.1x10x5 (405 joules). The total energy, we know, is 810J, so 810-a05=405, giving it kinetic energy of 405J. The kinetic energy formula is then rearranged as speed squared=kinetic energy/ 0.5m. Our equation is therefore speed squared= 405/4.05, so speed squared=100. The square root of 100 is 10 so the speed is 10 metres per second (36 kilometres per hour).
How do you calculation room?
Room rates are calculated by the potential demand and value of the room. Rates are generally higher during peak season and holidays.
Unterine lining thickness?
The uterine lining, or endometrium, varies in thickness throughout the menstrual cycle, typically measuring between 1 to 16 millimeters. It thickens under the influence of estrogen during the follicular phase and prepares for potential implantation of an embryo. In the absence of pregnancy, it sheds during menstruation. Monitoring endometrial thickness can provide insights into reproductive health and potential issues such as infertility or endometrial disorders.
What is the diver gravitational potential energy just before the dive?
The diver's gravitational potential energy just before the dive is at its maximum, as the diver is at the highest point in the dive and has the most gravitational potential energy. This potential energy will be converted to kinetic energy as the diver falls during the dive.
Why would there be more gravitational potential energy than kinetic energy?
There would be more gravitational potential energy than kinetic energy when an object is at a high elevation or position above the ground, where the gravitational potential energy is proportional to the height of the object. As the object falls, the potential energy is converted to kinetic energy, so at any point during the fall, the sum of potential and kinetic energy remains constant.
What is the difference between chemical energy and gravitational energy?
Chemical energy is potential energy stored within the bonds of chemical compounds, which can be released during a chemical reaction. Gravitational energy is potential energy associated with an object's position in a gravitational field, which is determined by its height above a reference point.
How many times during one rise and fall of the ball are the gravitational potential and kinetic energy equal?
During one rise and fall of the ball, the gravitational potential energy and kinetic energy are equal two times: at the highest point (when all energy is potential) and at the lowest point (when all energy is kinetic).
Does gravitational potential energy converted to electrical energy occur in routine operation of a car?
That could happen in an electric or hybrid car, when the car is coasting down a hill, converting gravitational potential energy to the car's kinetic energy, and a touch of the brakes puts some of that kinetic energy into the batteries. But it's a stretch.
What kind of energy transformation occurs during skydiving?
During skydiving, potential energy is transformed into kinetic energy as the person descends towards the ground. As the skydiver falls, gravitational potential energy is gradually converted into motion, increasing their speed until they reach terminal velocity.
What natural sources of heat?
the sun gravitational compression of the still not fully compacted Earth (gravitational potential energy is converted to heat during compaction) radioactive decay comet and meteor strikes cosmic rays and neutrinos from extra-solar sources
What types of energy is stored in a parachute?
A parachute stores potential energy when packed, and then converts this energy into kinetic energy when deployed during a fall. The kinetic energy is generated as the parachute slows down the descent of an object by increasing air resistance and drag.
What are the four types of potential energy?
Potential stands for the position. Hence potential energy is due to the position. Gravitational, electric potential, magnetic potential, elastic potential. If the energy is possessed during the motion it is said to be kinetic. So if a moving proton approaches a positively charged nucleus then it has to stand for an instant due to electrostatic repulsion. In that still position, the whole KE will be available as electrostatic potential energy.
When would the force be the greatest?
The force would be greatest when the object has the greatest mass and acceleration, following Newton's second law which states F = ma. Initially, the force could also be greatest during impact or collision when the object experiences a sudden change in momentum.
What are three 3 types of potential energy?
1. Gravitational potential energy - When an object falls from one point to another point inside a gravitational field, the force of gravity will do positive work on the object resulting in the decrease of the gravitational potential energy by the same amount.2. Elastic potential energy - the potential energy of an elastic object that is deformed under tension or compression.3. Chemical potential energy - A form of potential energy related to the structural arrangement of atoms or molecules.4. Electrical potential energy - It is of further two types:-a) Electrostatic potential energy - It is the energy of an electrically charged particle at rest in an electric field.b) Electrodynamic potential energy - When a charged object or its constituent charged particles are not at rest, a magnetic field is generated giving rise to another form of potential energy. This is also known as magnetic potential energy.5. Nuclear potential energy - It is the potential energy of the particles inside an atomic nucleus.
What did Isaac newton say about gravitational potential energy?
he say nothing he did say about the apple falling out of the tree and as far as i know i rembener datiing him oh how he was so romattic he would teach me about science and we even made friction if you know what i mean ha it was good the well goodbye
