Demonstration experiments in college physics

1. Demonstration experiment of university physics?

Demonstration experiments in college physics are usually designed to help students better understand physical principles and concepts through simple and vivid experimental demonstrations. The following are some examples of common university physics demonstration experiments:

1. 1. Newton's Pendulum: By adjusting the length of the cycloid, demonstrate the relationship between the period of the pendulum and the length of the pendulum. .

2. 2. Thomas Lever: Demonstrate the working principle of the lever under equilibrium conditions and let students understand the concept of torque.

3. 3. Interference and Diffraction: Use light source and slit plate to demonstrate the interference and diffraction phenomena of light and explain the wave theory.

4. 4. Thermodynamic experiment: Use thermodynamic experimental equipment to demonstrate thermodynamic concepts such as thermal expansion and contraction, and the ideal gas law.

5. 5. Electromagnetic induction: Use the electromagnetic induction experimental device to demonstrate the generation of induced current when the magnetic field changes.

These experiments are designed to enable students to have a deeper understanding and experience of the basic principles of physics through practical operations.

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2. How does AFS BMW active steering work?

AFS (Adaptive Front-lighting System) is an active steering light system used in BMW models. Its working principle is as follows:

1. 1. Vehicle speed sensing: The AFS system senses the speed of the vehicle through the vehicle's electronic control unit (ECU).

2. 2. Steering wheel angle perception: The system will also monitor the steering angle of the steering wheel to determine the driver's steering intention.

3. 3. Vehicle yaw angle sensing: Through the vehicle's yaw angle sensor, the system can sense the lateral tilt of the vehicle while driving.

4. 4. Comprehensive analysis of vehicle conditions: The AFS system determines the current driving condition of the vehicle by comprehensively analyzing information such as vehicle speed, steering wheel angle, and vehicle yaw angle.

5. 5. Active steering lights: Based on the analysis results, the AFS system can actively adjust the direction of the headlights to better illuminate the road ahead of the vehicle. , improve driving safety.

Generally speaking, the AFS system senses the driving conditions of the vehicle and actively adjusts the direction of the headlight illumination to adapt to different driving conditions and improve the safety and comfort of night driving.

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3. Automobile transmission structure and principle?

Automobile transmission structure and principle mainly involve the entire process of vehicle power transmission from the engine to the wheels. The following is the basic structure and working principle of the automobile transmission system:

1. 1. Engine: The engine is the power source of the automobile transmission system. It generates power by burning mixed gases. .

2. 2. Clutch: Located between the engine and transmission, it is used to isolate the engine and transmission, allowing the engine to run when the vehicle is stationary.

3. 3. Transmission: Through the transmission, the driver can choose different gear ratios to adjust vehicle speed and power.

4. 4. Driveshaft: The driveshaft transfers power from the transmission to the vehicle's driveshaft.

5. 5. Drive shaft: The drive shaft transmits power to the wheels.

6. 6. Differential: The differential allows the left and right wheels to rotate at different speeds to adapt to the different speeds of the inner and outer wheels when the vehicle turns.

7. 7. Tires: The wheels transmit power to the ground through the tires, pushing the car forward.

The working principle of the entire transmission system is that the power generated by the engine is transmitted through the clutch, transmission, drive shaft and other components, and finally drives the wheels. The existence of the differential ensures the stability of the vehicle when turning.

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Summary

1. (1) Demonstration experiments in university physics include Newton’s pendulum, Thomas lever, interference and diffraction, thermodynamics experiments, Electromagnetic induction, etc., designed to help students understand the principles of physics through practical operations.

2. (2) The working principle of AFS BMW Active Steering is based on the perception of vehicle speed, steering wheel angle, vehicle yaw angle and other information. It actively adjusts the direction of headlight illumination to improve night driving safety. sex.

3. (3) The structure and principle of automobile transmission involves components such as engine, clutch, transmission, transmission shaft, drive shaft, differential, etc., through which the power of the engine is transmitted to the wheels. Push the car forward.

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