SAI'S SCIENCE AND MATHS CLASSES

 Dear students please go through the questions in Microsoft form Click to attend the question

 This is a hand written collection. Jee aspirants can use this as notes

The questions are  moderate to hard level . Hints are given at the end of the pdf . Polynomials in pdf format   click the link

 Four identical solid spheres of mass 'm' and radius 'a' are placed as shown Find the moment of inertia of the system through A and axis parallel to DB Since the size of sphere is small it can be considered as a point object and moment of inertia about the given line can be calculated as follows. DE and BF can be calculated from respective triangles and CA and EF are the diagonals of the square. A is the mid point of EF. `I=M\timesK^2` `I=m\times 0^2 + m\times BF^2 + m\times CA^2 + m\times DE^2` =`m\timesl^2/2+m\times(sqrt(2) l)^2+m\times l^2/2` =`3ml^2`

 Video On MCQ 10th Trigonometry

Hi Students please click the link to attend the Quiz  1) Trigonometry