What is the difference between an inertia car and a pull-back car?
1 Answers
The differences between an inertia car and a pull-back car include: different constructions, different principles, and different movement directions. Here are the detailed explanations: 1. Different constructions: An inertia car has a relatively large and heavy flywheel inside, which requires pushing it forward before releasing it to make it move forward. A pull-back car has a spring inside, which requires pulling it backward before releasing it to make it move forward. 2. Different principles: (1) Principle of the inertia car: The 'flywheel' mechanism in an inertia car demonstrates its mechanical principle. When the rear wheels move backward or forward, they drive the flywheel to rotate rapidly in the opposite direction, storing rotational kinetic energy like a spring. When released, this energy is discharged, causing the car to move forward due to inertia for a certain distance. (2) Principle of the pull-back car: The 'axle' connected to the rear of the pull-back car is fixed to the internal gear of the pull-back mechanism. When work is done by pulling the car backward, the rear wheels rotate in the same direction, transmitting this motion through the 'axle' to the gears, which then drive the pull-back mechanism to make the car move. 3. Different movement directions: An inertia car can move both forward and backward due to its 'flywheel' mechanism. A pull-back car can only move in a fixed, single direction.
