After carrying out my Preliminary run I realised that I could have made the test more accurate to get more reliable results. In my experiment I will take in to consideration the following;. Horizontal -inverse tangent. Safety is very important in a scientific experiment even if the experiment may seem harmless. To make this experiment safe I will make sure equipment is always handled with a lot of care to avoid an accident.
Also I will not run around as one could get hurt. Also I will keep the desktop that I am working as clean as possible, so that there is nothing on the desktop, except for the apparatus needed thus; an accident does not happen. If an accident does occur I will inform the teacher straightaway. Another way to record the time would be to use a light gate. This would be connected to a computer light and it would indicate when the ball passes the points at the top and bottom connected to the lights.
On the whole I think my experiment went really well. I believe that I carried out my experiment reasonably, and I encountered no problems. As a result I ended up with an applicable set of results. I could carry out another experiment that would be quite similar to this one. I could investigate how the mass of a ball affected the speed. The two changing variables would be the weight of the ball and the steepness of the slope. Fair testing and safety would be just as important. I would have to use the same apparatus and overall the same method.
Also all the improvements I mentioned above I could use for this experiment. I would predict that the ball with greater mass would roll down the slowest and the ball with the least mass would roll down the fastest.
This is because a greater force would be needed to accelerate the ball with more mass, whereas a smaller amount of force would be needed to accelerate the ball will less mass. Also my preliminary run backs up my prediction as I can see that it took the three balls at the same height different speeds to roll down.
Get Full Access Now or Learn more. Aim: The aim of the experiment is to examine how the acceleration of the car differs when the angle of inclination of the ramp is amplified and to record and analyse findings. This is because the amount of gravity experienced by the car is dependent on the angle of the slope, the steeper the slope the more gravity will be experienced. Therefore, pulling the car down the slope at a greater velocity over the same distance thus creating a greater acceleration for the car.
Variables involved Description of variables How Variable will be kept constant Independent The angle of the slope ramp Measure the angle. Get Access. But this is only because the objects were always on horizontal surfaces and never upon inclined planes. The truth about normal forces is not that they are always upwards, but rather that they are always directed perpendicular to the surface that the object is on.
The task of determining the net force acting upon an object on an inclined plane is a difficult manner since the two or more forces are not directed in opposite directions. Thus, one or more of the forces will have to be resolved into perpendicular components so that they can be easily added to the other forces acting upon the object. Usually, any force directed at an angle to the horizontal is resolved into horizontal and vertical components.
However, this is not the process that we will pursue with inclined planes. Instead, the process of analyzing the forces acting upon objects on inclined planes will involve resolving the weight vector F grav into two perpendicular components.
This is the second peculiarity of inclined plane problems. The force of gravity will be resolved into two components of force - one directed parallel to the inclined surface and the other directed perpendicular to the inclined surface. The diagram below shows how the force of gravity has been replaced by two components - a parallel and a perpendicular component of force.
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. It is the parallel component of the force of gravity that causes this acceleration. The parallel component of the force of gravity is the net force. The task of determining the magnitude of the two components of the force of gravity is a mere manner of using the equations.
The equations for the parallel and perpendicular components are:. In the absence of friction and other forces tension, applied, etc. This yields the equation. In the presence of friction or other forces applied force, tensional forces, etc. Consider the diagram shown at the right. The perpendicular component of force still balances the normal force since objects do not accelerate perpendicular to the incline.
Yet the frictional force must also be considered when determining the net force. As in all net force problems, the net force is the vector sum of all the forces.
That is, all the individual forces are added together as vectors. The perpendicular component and the normal force add to 0 N. The parallel component and the friction force add together to yield 5 N. The net force is 5 N, directed along the incline towards the floor. The above problem and all inclined plane problems can be simplified through a useful trick known as "tilting the head. Thus, to transform the problem back into the form with which you are more comfortable, merely tilt your head in the same direction that the incline was tilted.
Or better yet, merely tilt the page of paper a sure remedy for TNS - "tilted neck syndrome" or "taco neck syndrome" so that the surface no longer appears level.
This is illustrated below. Going up a hill the lighter car will have a higher top speed. Heavier cars have more momentum, so they travel further, given the same amount of friction. The capacity, voltage or strength of a battery itself plays a significant role in achieving a faster speed. Most Power ride on cars come with a 6-volt battery. The battery is usually in place for obvious reasons. This is to power a DC direct current motor so as to spin which therefore propels the run.
The force of gravity is the weight of the body. Hence an object with greater mass feels greater force than the other one. So even if the slope is same for both objects, a massive object moves faster through the slope than a less mass object. When a car is on a ramp, a component or part of the force of gravity acts parallel to the ramp, causing the car to speed up, or accelerate down the ramp.
This acceleration is not as great as when the car falls straight down since part of the gravitational force is also holding the car against the ramp. According to Education. An object on a more tilted surface rolls down it at a faster rate. An object with more weight resists any change in its speed and has a greater tendency to maintain its motion.
This is because an object with more weight is more massive, and an object that is massive has more inertia that causes it to resist any change in speed. Does height affect how fast you can run? Other things that contribute to running speed: flexibility and strength. No matter what height you are, running to improve speed requires both of those things.
0コメント