Dynamometer for physics teaching

The utility model discloses a dynamometer for physics teaching, including the main casing body, lower cover and drag hook, the main casing body is through first axis of rotation and upper cover interconnect, the fastener is installed to upper cover one side, the fastener is installed to main casing body one side, it is fixed with the drop handle to take out the board department outside, main casing body upper end surface is provided with calibration mark, main casing body internally mounted has the spring, the lower cover passes through second axis of rotation and main casing body bottom interconnect, the lower cover is inside to be provided with the memory area, and the inside surface in memory area is provided with the standing groove, the drag hook is fixed inside the standing groove. This dynamometer for physics teaching the mistake can not appear and touch the circumstances of pointer in the use, avoided the mistake to touch the measured deviation who leads to the fact, and the upper cover is inside to b