Physics-Enabled 3D Design App

I need a prototype desktop or web application that lets secondary-school students create 3D projects and immediately test their ideas with built-in physics simulation. Circuit design was an early thought,... (Budget: ₹12500 - ₹37500 INR, Jobs: 3D Animation, 3D Design, 3D Graphic Design, 3D Modelling, Game Development, Unity)