How to solve physics numericals effectively?

 
1) Draw a clear diagram showing all the systems and their interaction. For a mechanics problem, a free-body diagram provides immense help in solving the problem. The issue will become easier once it is drawn out.
 
2) In any problem of physics, some information is given, and the value of some variable is to be found. Jot down all the known quantities on one side, and list all the unknowns for which you are solving the problem on the other side
 
3) Establish which general principle relates the given parameters to the quantity that you are seeking. Usually, your picture will suggest the correct method and formulas. Sometimes it may be necessary to obtain further information from your textbook or notes before the proper formulas can be chosen.
 
4) Take your formula and try to solve for one variable at a time. Solve for each variable that is listed under the “unknown” category. Try solving for the variables you can determine easily first.
 
5) You must use a consistent system for all the quantities involved. This will ensure you get the correct answer
 
Bonus Tips:
 
6) Finally, check if the result makes sense to you
 
7) Master these techniques in physics homework, then you should be able to finish your physics examination within the given time and with no mistakes