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Collection of Physics Essays
1. Design of driver head and pile:
Design Reason
The mass of the
driver head should be
big.
So that, the driver
head will have a high
momentum or inertia
when falls.
Driver head should
be raised higher
before dropping
Have a higher velocity
to increase momentum
when it strikes at the
pile.
The contact surface
between the driver
head and pile should
be hard.
To reduce the time of
impact so that a large
impulsive force is
produced
2. Design of more efficient generator:
3. Design of spring in suspension car
system:
4. Suitable radioisotope in detecting
leakage in underground water pipes:
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5. Suitable cables used as transmission
cable:
6. Suitable liquid as coolant in car engine:
7. Suitable liquid used in thermometer:
8. Design of loudspeaker and hall to
produce loud and clear sound:
Design Reason
The loudspeakers are
not installed against
each other.
To avoid multiple
reflections.
Loudspeakers are
installed at a far
distance from each
other.
So that the distances
of constructive and
destructive
interferences are
bigger.
Use high powered
loudspeakers.
So that the sound
output will be loud
and clear.
Use soft board for the
wall of hall.
To reduce echo of
sound waves.
Cover the floor with
carpet or use sound
proof flooring.
To avoid reflection of
sound wave from the
hard floor.
Sitting area is
arranged in the
antinode region only.
So that louder sound
can be heard by
audience.
9. Modifications to improve the reception
television signals:
Design Reason
Use wave of longer
wavelength.
To increase the effect
of diffraction.
Set up the transmitter
on hill tops.
The signal will not be
blocked.
Install a relay
transmitter on the hill
top to amplify and
retransmit the signals
To increase the
strength of signals
Build a taller signal
receiver at house.
Able to receive the
signals without
disruption.
Increase the strength
of signals.
The signals can travel
further.
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10. Modifications on a car to make it safe
for drive:
11. Design of water rocket and its launcher:
12. Design of thermometer:
13. How to convert dc generator to ac
generator and modifications that can be
done to increase the induced current
generated.
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14. Design of submarine:
15. Design of Formula One racing car to
achieve maximum acceleration and
stability:
16. Modifications on the desk lamp used by
the student:
