Novel gravitational acceleration measuring device based on rotational inertia

The invention provides a novel gravitational acceleration measuring device based on rotational inertia. The novel gravitational acceleration measuring device comprises a base and a vertical mounting plate, a leveling assembly is arranged on the base, the vertical mounting plate is clamped on the base, a swing rod and a photoelectric door are arranged on the front surface of the vertical mounting plate, and the swing rod is rotationally connected with the vertical mounting plate; the photoelectric door is fixedly arranged on the vertical mounting plate and located under the rotating center of the swing rod, and a swing rod pushing assembly is arranged on the rear surface of the vertical mounting plate. The device has the beneficial effects that the device is scientific and reasonable, safe and simple to operate, high in stability and accurate in data; moreover, the device is high in operability, it is easy for teachers to demonstrate and middle school students to operate by themselves, and it is verified for m