One-to-one online Physics mentoring by Kumar Sir for NEET, IIT-JEE, CBSE, IB, ICSE, IGCSE and AP Physics students in Friends Colony West and nearby South Delhi localities.
Why Students in Friends Colony West Need a Personal Physics Tutor
A student living in Friends Colony West, South Delhi, may attend a good school, have access to books, videos and coaching material, but still struggle in Physics. The student may understand the teacher during class but fail while solving NEET, IIT-JEE or CBSE numericals independently. Parents often notice that the effort is there, but marks are not improving. This usually happens because Physics needs personal doubt solving, concept clarity and guided numerical practice.
Kumar Sir works with students one-to-one so that every class is focused on the exact difficulty the student is facing. Because the classes are online, students from Friends Colony West can learn from home without losing travel time, while still getting a personal class plan. Kumar Sir identifies weak concepts, explains Physics step by step, improves numerical solving, teaches diagrams and derivations, and connects theory with exam-style questions for NEET, IIT-JEE and school exams.
If you are searching for a Physics Tutor in Friends Colony West or an Online Physics Tutor in South Delhi, contact Kumar Sir for one-to-one online Physics classes.
How Kumar Sir Helps
Identifies weak concepts before they become exam pressure.
Explains Physics step by step with clear reasoning.
Improves numerical solving for school and entrance exams.
Teaches diagrams, derivations and scoring presentation.
Gives one-to-one attention through online Physics classes.
Parallel Axis Theorem and Perpendicular Axis Theorem - Rotation Made Simple
Rotation is one of the chapters where students often know the formula but feel unsure about the axis. Kumar Sir teaches the idea visually first, then connects it with the formula, so students understand when to shift an axis and when to combine axes.
1. Parallel Axis Theorem
I = ICM + Md2
ICM = moment of inertia about centre of mass axis
M = mass of the body
d = perpendicular distance between the two parallel axes
This theorem is used when we know moment of inertia about the centre of mass but need moment of inertia about another parallel axis. In rotation questions, students often use it for rods, discs, rings, cylinders and composite bodies. For a rod, if moment of inertia about centre is known, we can find moment of inertia about one end using parallel axis theorem.
2. Perpendicular Axis Theorem
Iz = Ix + Iy
For a plane lamina lying in the xy-plane, this theorem connects moment of inertia about two perpendicular axes in the plane with the moment of inertia about an axis perpendicular to the plane.
Important condition: Perpendicular axis theorem applies only to plane lamina, not to all 3D bodies. For a thin disc or ring lying in a plane, if we know moment of inertia about two diameters, we can calculate moment of inertia about the central axis perpendicular to the plane.
3. Difference Table
Theorem
Formula
Used For
Important Condition
Parallel Axis Theorem
I = ICM + Md2
Shifted parallel axis
Any rigid body
Perpendicular Axis Theorem
Iz = Ix + Iy
Plane lamina
Only plane lamina
Exam Tip: For NEET and IIT-JEE, remember: parallel axis theorem shifts the axis. Perpendicular axis theorem combines two in-plane axes to get the perpendicular axis.
Courses Covered
Kumar Sir teaches Physics with personal attention for school boards, international curricula and competitive entrance preparation.
NEET Physics
IIT-JEE Physics
CBSE Class 11 Physics
CBSE Class 12 Physics
IB Physics
ICSE Physics
IGCSE Physics
AP Physics
Friends Colony West and South Delhi Physics Tutor Links
If Physics concepts, NEET numericals, IIT-JEE rotation questions, parallel axis theorem or perpendicular axis theorem are still confusing for a Friends Colony West student, contact Kumar Sir directly for one-to-one online Physics classes.
Looking for the best Physics tutor in Friends Colony West? Premium one-on-one coaching for NEET, JEE & CBSE by Kumar Physics Classes. Call +91-9958461445.
Best Online Physics Tutor in South Delhi – One-on-One Coaching by Kumar
Physics is one of the most scoring yet challenging subjects for students preparing for competitive exams like NEET, IIT-JEE, CUET, SAT, IB HL Physics, and CBSE Class 11 & 12 Board Exams. Every year, thousands of students struggle not because they lack intelligence, but because they lack proper guidance, conceptual clarity, structured study planning, and a teacher who truly cares.
This is exactly what Kumar Physics Classes provides: Personalized, premium-quality, one-on-one Physics tutoring designed for high-performing students and demanding parents living in South Delhi’s top luxury neighbourhoods.
