Explain angular momentum precession and give examples.

Explanation:

Angular momentum precision:

   We know that

Linear momentum P= m. v

Rate of change in linear momentum is called force.

Angular momentum L = I.ω

            L =  I.ω

Rate of change in angular momentum is called torque .

This rate of change of angular momentum is called angular momentum precision.

Example of angular momentum:

1. Lets take a disc is connected to shaft ,When disc is rotating along its axis and shaft is also rotating .

2.When air plane take turn then they feel one torque this torque is nothing ,it is due to angular momentum precision.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.