Recent content by WuliDancer

I just want to share my thoughts with everyone.

First, we construct a simple pendulum, the length of the rope remains unchanged and the object being swung is doing circular motion. If it is released from point D and reaches point F, we set: The length of the rope (i.e the pendulum length) is L, ∠FCB=90°, ∠DCF=β, ∠ECF=α, the mass of the...

I remember that the unit of angular velocity ω is degrees per second, and after converting ° into radians, there is no unit, that is, 180° = π (π has no unit).

Let's construct a model: a small ball with mass m is thrown on a horizontal plane with a V, and the direction of the velocity makes an angle θ with the horizontal plane. What is the maximum height it can reach? (ignoring air resistance) We that the kinetic energy of an object will not be...