Archive
7th of September 2015
Physics
Q:

2 balls are thrown vertically upward with their initial velocity 1:2.find the ratio of their matimum height

Aryan Gupta - CBSE - Class IX

Saturday, September 05, 2015 at 19:05:PM

A:

Hi Aryan,

begin mathsize 14px style It space is space given space that space straight u subscript 1 over straight u subscript 2 equals 1 half We space know space that space after space reaching space maximum space height comma space final space velocity space is space zero. So comma space we space have straight u equals square root of 2 gh end root Here comma space straight h space is space the space maximum space height space reached. For space both space balls comma space we space get space the space ratio space as straight u subscript 1 over straight u subscript 2 equals square root of fraction numerator 2 gh subscript 1 over denominator 2 gh subscript 2 end fraction end root equals square root of straight h subscript 1 over straight h subscript 2 end root therefore 1 half equals square root of straight h subscript 1 over straight h subscript 2 end root therefore straight h subscript 1 over straight h subscript 2 equals 1 fourth end style

Monday, September 07, 2015 at 18:10:PM