Sport & Outdoor – Others
Experienced athletes share their insights in answering this question:
It all depends on the surface Skatelite lasts well over 4 years and
so does polyboard if you look after it.
so does polyboard if you look after it.
How to Identify and Resolve Common Issues ?
We offer a diverse range of insights on identifying and resolving common problems in sports. Our sources encompass academic articles, blog posts, and personal essays shared by seasoned athletes. :
As ramp height increases, applied force also increases. How does increasing the height of the ramp affect work (when length and weight are constant)? As the ramp height increases, work also increases.
Galileo used inclined planes to study motion. As ramp angle increases, the distance traveled in one second increases. This means the ball moves faster on the steeper ramps.
These simple machines reduce work by changing the direction of a force. Instead of lifting an object straight up into the air, we can use a ramp or staircase to gradually move that object to the same destination. This reduces the work involved by changing the direction of the object being moved.
A ramp is a surface with an incline. All vehicles with wheels roll easily down ramps due to gravity. The height of a ramp affects how far a vehicle with wheels will go and how fast the vehicle will travel. For example, the higher the ramp, the faster and further a vehicle will go.
Increasing the height of the ramp will decrease the distance the ball rolls.
Answer and Explanation: The efficiency of the ramp or an inclined plane is measured by the ratio of its output work and the input work. The output work is the difference between the input work and the energy loss due to friction.
A line with a positive slope slants to the right, and the larger the slope, the steeper the line. A line with a negative slope slants to the left and, the larger the slope, the greater the steepness of the line. A horizontal line has no slant and therefore, has a slope of 0. The slope of a vertical line is undefined.
This is because moving up or down a hill changes one kind of energy into another. Objects at the bottom of the hill have more kinetic energy, which means they are moving faster. At the top of the hill, they are higher up, which means they have more potential energy.
The ADA requires that all business and public use wheelchair ramps adhere to a 1:12 slope ratio, meaning that for every inch of vertical rise there must be 12 horizontal inches (one foot) of ramp.
Weight affects speed down the ramp (the pull of gravity), but it`s the mass (and friction) that affects speed after a car leaves the ramp. Heavier cars have more momentum, so they travel further, given the same amount of friction.
You also know from experience that the longer the hill, the faster you go. The longer you feel that push from gravity, the faster it makes you go. Finally, you know that the steeper the hill, the faster you go.
Harder surfaces return the energy more quickly, allowing the athlete to cover ground with greater speed.
As the ramp becomes steeper, the less the force of gravity is resisted by the normal force. For a completely vertical surface, there will be no normal force and therefore the force of gravity pulls the ball towards the earth unimpeded. This means that increasing the ramp height should increase the speed of the ball.
We found that the higher the ramp, and therefore the greater the potential energy, the greater the distance the cart went before stopping.
Object move fast or slow on different surfaces. This is because of friction. Friction is a resistance to motion on a surface. If you kick a ball on grass, the ball eventually slows down because of the bumps in the grass.
The effect of incline shape on incline speed is remarkably simple. At any point along an incline, an object`s speed depends on the net vertical drop at that point, regardless of the ramp shape prior to that point.
The perpendicular component of the force of gravity is directed opposite the normal force and as such balances the normal force. The parallel component of the force of gravity is not balanced by any other force. This object will subsequently accelerate down the inclined plane due to the presence of an unbalanced force.
The higher the angle of inclination, the greater the force due to gravity. As the value of this component increases along with the increase in inclination, the acceleration and velocity associated with the original motion of the car down the ramp will be greater.
The mechanics and rates of slope movement are controlled by many factors: slope gradients, overburden depth, structural rock properties, water content and soil pore water pressure, and certain engineering properties of overburden and weathered rock, such as cohesion and coefficient of friction.
The steeper the slope of the line the greater the acceleration. If the line slopes upward from left to right, this means the object is speeding up. Its acceleration will be positive.
A higher positive slope means a steeper upward tilt to the line, while a smaller positive slope means a flatter upward tilt to the line. A negative slope that is larger in absolute value (that is, more negative) means a steeper downward tilt to the line.
Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the maximum height.
When the slope of the incline is steeper, there is a greater component of the gravitational force acting upon the cart, causing to it accelerate at a higher rate. When graphed, the acceleration vs. sine (angle of incline) showed that the values had a linear relationship.
Ramp runs shall have a running slope not steeper than 1:12.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
1985 40 hp Johnson outboard wouldnt open up and
ANSWER : Sounds like your mix is off and it’s fowling the plugs. probably too rich. make sure the level in your carb bowls isn’t too high. Really sounds like you should clean and bench set your carbs. Especially if a plug change helps but doesn’t last, then it’s got to be your fuel mix, or maybe timing.
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I just bought a brand nbew ww54 weight watchers scale but not matter what I do it’s not giving me the right weight (65 to 70lbs, I’m 180) and always reads ERROR for the body analysis measurements???I followed the instructions and even had someone else follow the same instructions and got the same. I put a new battery in, no change! Used a level to make sure the floor was level, no change! My feel were completely on electroydes no change! Most I’ve ever spent on a scale recommended by weight watchers and I’m so dissapointed.
ANSWER : Did you make sure it was set to lbs instead of kilograms?
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I have had two small Coleman ‘Frontier PZ’ propane lanterns for a number of years with no problems. Last year one of them started shutting down for no apparent reason – it would light normally, burn for 4 – 5 minutes and then go out. This summer the second lantern has started doing the same thing. Changing gas cylinders seems to have no effect, nor does a new mantle fix the problem. It’s hard to be certain but as I can’t hear any gas hissing it’s as if the jet gets blocked after a few minutes alight. Turn off the gas, leave the lantern alone for a while and it will relight ok, though it will still only burn for a few minutes before going out again. Any ideas?
ANSWER : There is something in the jets or the piping to the mantels, you my find spider webing there, if you did no cap the port where the tank goes some small friends might have wanted to go camping with you.
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I have never changed the rubbers on my ping pong paddles and have been using them for just over a year. I bought some new rubbers, but don’t know how to change it. Can someone please help
ANSWER : Changing the rubbers of a ping pong paddle can take between
15-20 minutes of your time and a lot of precision. I will send you a how-to guide that will take
you through the steps.
15-20 minutes of your time and a lot of precision. I will send you a how-to guide that will take
you through the steps.
http://www.ehow.com/how_5672496_change-ping-pong-rubber.html
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Water in the fuel tank of my Zodiac dinghy with Yamaha 2001 50 HP
ANSWER : I’d add a little dry gas to **** up any remaining water and give it a shot
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My swimming pool. I have just had my fifth IC 40 Intellichlor chlorine generator installed in 4 years at a cost of over $900 today. Each one has worked for no more than 8 months. The first three were replaces under three year warranty, the fourth by a factory rep and I bought the fifth today. The first three all failed with Flow Chk PCB error message. The fourth just stopped working on Sunday, no power or lights. A local Pentair warranty person, whom I paid a Service Call, unplugged the unit, opened the small power center cover, showed me the green light indicating that there was power, plugged in a new IC 40 which worked immediately (as did the other four). I asked if I should replace the power center and he said that it’s basically just a transformer and is working fine. We do get occasional power blips that make the clocks on microwaves, etc blink, but I thought that the power center essentially isolates the cell from these. I do have a Florida Power and Light surge protector on the electrical box that brings power into the house. I have now talked to the pool builder, two Pentair warranty repairmen and one factory rep. I am at a loss. They all tell me they have no idea why these units fail after less than a year. This last IC 40 was installed 3/24/2010, version 2.0 and now failed in less than 5 months. Should I replace the power center that the IC 40 plugs into. Any other suggestions. I have been told that this is the best chlorinator. I don’t want to keep replacing units. By the way, each unit had been spotless inside. I keep the water chemicals and salt levels at ideal levels. The units have never worked long enough to get dirty inside. The power center is connected to an Intellitouch control system outside with an indoor control panel. Last time I called Pentair North Carolina and got some smart alec tech person that had no suggestions. Please Help if you can.
ANSWER : I’ve had the same experiance. On my fifth one as well. Fail every year. No idea why.
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I,ve got a Kawasaki super sport xi (jh 750-b) it hasnt been started ffor a couple of years so its my job to get it going so i’ve cleaned out the water jet (cause it had some big stones in) got some new spark plugs and tried kicking it over, there NO SPARK now. And also i could turn the propeller and it wasnt turning the engine, is that true. My friend said it had sucked up a stone and snapped somekind of bolt is this true. If its the coil packed buggered thats why there no spark where can i get another…. Many thanks carlie
ANSWER : Two problems if there is no spark it could be several things, the prop not spining is normal if you sucked up rocks, it’s design to do that to save the motor. It’s a rubber spacer. I’m parting out my 750 xi ss. Let me know if you need parts [email protected]
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