Saket Trivedi on Instagram: "Simple harmonic motion ( undamped ) is similar to projection ( shadow ) of a uniform circular motion . This helps in solving all questions of shm through simple maths. The shadow of BOB with the spring is to demonstrate how the shadow of a circular motion and shadow of actual mass spring system look exactly the same . . . . . . [physics, science, demonstrate, experiment, chemistry, concept ] #physics #neet #jee #science #demonstrations"