Chapter 13: Oscillations
NCERT Class 11 Physics, Part II, Chapter 13. 6 lessons, 12 narrated 3D videos, 8 simulations and 12 quiz questions, following the textbook section by section.
- Periodic and oscillatory motionLook around you. The hands of a clock go round and round. The Earth spins once a day, and the Moon circles the Earth about once a month. Your heart beats again and again.
- Simple harmonic motionA particle moves to and fro along the x-axis, between x equals plus A and minus A, about the origin. Watch it with a strobe light: dots far apart in the middle, crowded…
- Velocity and acceleration in SHMBack to the reference circle. P moves round a circle of radius A with constant angular speed ω, so its speed is v equals ωA, along the tangent.
- The force law for SHMWe found that in SHM the acceleration is a equals minus ω squared x. Now bring in Newton’s second law: the force on the particle is F equals m a.
- Energy in SHMA block oscillates on a spring on a smooth floor. As it moves, its speed keeps changing, and so does the stretch of the spring. Let us follow the energy.
- The simple pendulumTie a small heavy stone to a thread and hang it from a fixed support. This is a simple pendulum: a point mass m, called the bob, on a light, inextensible string of…