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# Physics Principles- Applications

Extracts from this document...

Introduction

Physics Principles that can be observed in a Theme Park

Introduction

Physics is a large subject that can be observed almost everywhere,
even in a theme park, in a theme park physics principles such as
weightlessness and acceleration/deceleration play a large part in
ensuring that the rides are as thrilling as they are safe. In this
essay I am going to show how two certain physics principles are being
used in a ride to ensure that the ride is safe but at the same time
delivers a lot of thrill to the rider. I am going to explore the sense
of weightlessness during freefall, and how forces are used to
ensure that the ride is not dangerous, I will also mention how
gravitational potential energy converts to kinetic energy as the ride
drops.

Physics principles

Weightlessness

Freefall is a term used to describe how an object is moving through
the air when there are practically no forces other than gravity acting
on them. During freefall, object experience a sense of
weightlessness but weightlessness does not mean that an object
loses all its weight. Since in Physics weight does not mean how
heavy an object is, (that is known as the mass) weight is a term
used to describe how much force and object is exerting due to gravity,
weight can only be felt if there is another force opposing the
direction of the weight, as stated by Newton’s laws of motion that

Middle

Location

For this coursework, I visited a theme park called Thorpe Park, an
amusement park full of thrilling rides that use physics to create the
maximum thrill whilst still keeping the ride safe and keeping the
passengers out of harms way. The ride I am going to study is called
Detonator, it uses both the physics principles I explained above,
below is a picture of the ride, it involves pulling a platform of 14
seats up to a certain height, before dropping the platform into
freefall towards the ground and stopping the ride just in time.

Estimation

Method

The ruler is levelled up with the height of the ground, the object is
then moved along the ruler till it reaches the level of the building,
the measurement of the height of the object is taken as well as the
distance of the measuring point to the structure and the length along
the ruler, we can then use similar triangles where X/h2=h/d, thus the
height of the actual structure would be X/h2, x d. Below are the
measurements I took at the ride:

Height of object 15cm, 0.15m

Length along ruler, for height of ride 33cm, 0.33m for
height of brakes 14cm, .14m

Distance from structure 1630cm, 16.3m

So the height of the ride would be X=0.33m

h2=0.15m

d=16.3m
h=0.33/0.15=2.2
x16.3
h=35.86m
And the height of the brake would be X =0.14m
h2=0.15m
d=16.3m
h=0.14/0.15=0.93
x16.3
h=15.44m
Time in freefall 2s
Time braking 0.7s

Conclusion

calculations is the force of friction which could have lowered the
overall speed of the ride since not all the gravitational potential
energy (stored energy an object has due to gravity) would have been
converted to kinetic energy (movement energy an object has), which are
other physics principles I could have analysed and looked at when
studying the ride.

Future developments

The same physics principles could be used to make a larger or
different version of the ride. An idea would be that people are placed
in seats in a transparent plastic capsules, which is then dropped down
a tube onto a cushion type material to cushion the blow, below is a
diagram of how it would look, the material would have to be carefully
chosen in order to make sure it is soft enough and compresses enough
to absorb the entire impact, in order to make the ride twice as fast,
the ride would have to be more than eight times as high because if we
re-arrange the equation for kinetic energy and gravitational
potential, then

½mv²=mgh
We can cancel the m
½V²=gh
If we multiply by 2
V²=2gh
And then square root
V= 2gh

In order to double the velocity, we must multiply be two on both sides

2V = 22gh
=4x2gh

Which makes
2V=8gh

So the height has to be 8 times larger in order to double the velocity
And the cushion would have to have a even larger stopping force to
make sure the person is stopped in time, but it would have to dent in
a lot in order to avoid causing any damage to the passenger or the
capsule

This student written piece of work is one of many that can be found in our AS and A Level Modern Physics section.

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