its a simple project of maths and physics containing the principle of focus of parabola

1. MATHS PBL
SOLAR HOT DOG COOKER
USING PRINCIPLE OF PARABOLA

2. GROUP MEMBERS
• N.SAI SURYA PRAKASH REDDY…………………14BCE1078
• A.SAI KRISHNA…………………………………………14BCE1126
• M.GOWTHAM………………………………………….14bec1202

3. AIM OF PROJECT
• USING SOLAR ENERGY BAKING OF A HOT DOG
• we do this with the help of of parallel lines and focus of parabola

4. PROCEDURE
• 1.Using graph paper,contruct a parabola of known
eqn(y-k)=4ax^2.
• 2. Known eqn is needed to calculate exact focus

5. • OUR PARABOLA EQUATION
• Y=0.035X^2
• FOCUS=7.14 cm

7. WORKING OF PROJECT
• 3.Trace the parabola on shoe box with help of
scissor ,etc
• 4.Paste the aluminium foil on poster box and fix it
on surface of parabola

8. WHY PARABOLA??

9. • The parabola is shaped so that it collects the sun rays and focuses them at one point, the focus, in the
center of the parabola. This is where the hot dog is placed, and the energy from the sun is used to cook
the hot dog.
• Because the sun is so far away from the earth, the light rays hitting us are essentially parallel. Parallel
incident rays of light which strike a parabolic mirror all pass through the same point after they are
reflected.
• Light is reflected off of nearly everything, but we used foil because it’s highly reflective and much of the
heat and energy from the incoming sun rays is redirected to the hot dog. This would not work with a
material that was not reflective.

11. THANK YOU