Answer this :)

[mystic]

@admin why it is "200 thank was given in 172 posts"
it should be "200 thanks was given in 172 posts"

 

[mystic]

One more question...

If you drop a roti & pizza from Burj Khalifa (world's tallest bldg) at once.
Which will reach the ground first & why.

 

[kramkumar]

RE: Answer this New question 18 apr 2011

Please refer these two experments details:
1. Proved by Galileo Galilei at Pisa Tower(1583).
2. Analytical analisys, demonstration and mathematical form by Sir Isaac Newton(1675).

Both will reach at the same time, if size and shape of both are same. The initial speed is 0 for both, and the only acceleration working in that system would be g(Gravity acceleration). So, as the distance is the same, the final speed will be the same too.

The only reason which could change this result is a difference in the shape of both objects. While they fall to the ground, they must "open" a way across the air. The shape of the falling object will decide the force needed to open that way. This is called the "Air resistance". Depending on the shape of the object, the resistance force, will be bigger or smaller. As this force works counter to g, the falling time will decrease.

Between a feather and a plumb ball, the falling time will be the same in vaccum, but inside air, the resistance force for the feather has almost the same value than gravity, while for the ball, the resistance is very much weaker than gravity.

An opened and a closed parachute weights the same in both cases, but the resistance force changes a lot when it opens.

So roti will come first, if the size is smaller than pizza.

 

[mystic]

RE: Answer this New question 18 apr 2011

Please refer these two experments details:
1. Proved by Galileo Galilei at Pisa Tower(1583).
2. Analytical analisys, demonstration and mathematical form by Sir Isaac Newton(1675).

Both will reach at the same time, if size and shape of both are same. The initial speed is 0 for both, and the only acceleration working in that system would be g(Gravity acceleration). So, as the distance is the same, the final speed will be the same too.

The only reason which could change this result is a difference in the shape of both objects. While they fall to the ground, they must "open" a way across the air. The shape of the falling object will decide the force needed to open that way. This is called the "Air resistance". Depending on the shape of the object, the resistance force, will be bigger or smaller. As this force works counter to g, the falling time will decrease.

Between a feather and a plumb ball, the falling time will be the same in vaccum, but inside air, the resistance force for the feather has almost the same value than gravity, while for the ball, the resistance is very much weaker than gravity.

An opened and a closed parachute weights the same in both cases, but the resistance force changes a lot when it opens.

So roti will come first, if the size is smaller than pizza.

:smiley-shocked028:

 

[mystic]

RE: Answer this New question 18 apr 2011

Pizza will reach first as it is a FAST Food

 

[Bapun]

RE: Answer this

^^^
ya rite answer

 

[mystic]

RE: Answer this

Name the bollywood movie based on blockbuster hollywood movie The Rock

 

[kramkumar]

RE: Answer this

Qayamat: City Under Threat

 

[mystic]

RE: Answer this

:up: Weldone! Right answer .... :dance3:




Thanks wikipedia

 

[mystic]

RE: Answer this

Identify the bollywood actor...... :