Physics Project

1
Physics Project Monkey And Hunter
M
Members
Siu Kam Tip Chan Chak Kit Cheng Kin Chuen
2

Introduction of the project We have set a
similar experiment as the experiment of Monkey
And Hunter . And the aim of our experiment is
to show the result of the experiment, if the
hunter will really hit the monkey.
3
Introduction of the original experiment 1.When
the bullet leaves the mouth of the toy gun,
it breaks the aluminiem strip and the circuit
of the electromagnet . 2.At the time the
iron monkey falls vertically Downward ,and
the bullet will always hit the monkey.
(Diagram will show on next page)
4
The experiment,as shown below
5
Actions we take to show the experiment

• We use a toy car instead of
• the bullet and an iron box
• instead of the monkey.
• We do not use aluminium
• strip , instead, just let the
• two ends of electric wires
• reach each other that the
• circuit can pass.

act
Those are the things we have changed , other
parts of the experiment are similar to the
origin.
6
Here is the movie of our experiment
7
As the movie shows at the first time
although we do not success , final we try hardly
and we achieve our goal, the car final hit the
box.
? So, what is happen behind the
experiment? ? Why the car and the box hit at
the same time?
8

• Process of the experiment
• -The car performs projectile motion
• the box performs vertical motion.
• Both the car and the box start with
• zero vertical downward velocity and
• they fall under the same acceleration
• due to gravity.
• ?
• their vertical motion are identical
• .

9

• -Since their vertical
• positions are same at
• any instant moment.
• As the result, the car
• hit the box

10
So, the answer is

• The theorem behind the experiment
• The horizontal and the vertical
• components of the projectile motion
• of the car are independent of each
• other.

That is why they hit at the same time
11
The velocity the displacement of horizontal
motion can be represented by the following
equations
Velocity Vx Ux Constant
Displacement SxVxtUxt
12
The velocity the displacement of vertical
motion can be represented by the following
equations
Velocity Vy-gt Uy0
Displacement Sy-1/2gt2
13

• Problems we met during setting the.
• experiment
• The weakness of the magnetic force
• of the soft iron.
• Our solution
• By adding more turns of coil.
• 2. The power which make the car moves.
• Our solution
• By pulling car with hand instead of
• depending the electric power of the car.
• Therefore easier to control the speed.

14
3.The horizontal distance between the car and
the box. Our solution By doing the
experiment several times to find out the most
suitable distance. 4. During the experiment the
magnetic force of the soft iron
disappeared. Our solution Check the whole
system several time to see if there are some
places we have connected wrongly.
15
Conclusion
The result of the experiment Monkey
And Hunter is due to the independence of the
horizontal and vertical motion. And which the
monkey and the bullet have the same acceleration
due to gravity. To see if the hunter
will really hit the monkey at the same, we set a
similar experiment as Monkey And Hunter. The
result shows us from the experiment we have done
is the bullet really hit the monkey. It proves
the theorem behind it is true.
Although, we met some troubles during the
setting process of the experiment, such as
finding the ingradients We needed for the
experiment, we still happy that we have a chance
to set the experiment by ourselves.
16
It is really a valuable experience for us. Hope
in the following days we also have the chance to
do this kind of experiment.
17
ThE EnD