- An odometer is specifically designed to measure the distance covered by a vehicle. - A speedometer measures speed. - Other options are not used in automobiles for measuring distance traveled.
Laptop accidental free fall Many modern laptops have sensors to detect free fall and suddenly stop the hard drive head to prevent damage upon impact. While accelerometers are primary in detecting the acceleration due to gravity and the subsequent impact deceleration, gyroscopes can be used in conjunction to better characterize the motion (e.g., determining if the laptop is rotating during the fall), improving the accuracy and reliability of the free fall detection system. Thus, the function of a gyroscope can be used. 3. Smartphone tilt for display rotation While the basic detection of static tilt relative to gravity is done by accelerometers, modern smartphones use gyroscopes in combination with accelerometers (IMU) for more accurate, stable, and responsive orientation sensing. The gyroscope measures angular velocity, allowing the phone to detect rotations quickly and smoothly, distinguish intentional rotations from accidental movements, and provide faster screen transitions between portrait and landscape modes. Thus, the function of a gyroscope is used. 15. Automobiles are fitted with a device that shows the distance travelled. Such a device is known as
Asked in UPSC CISF AC EXE 2017 · Topic: Measuring Instruments and Scales (Fundamental concepts of measurement: accuracy, precision, and errors (systematic, random, gross))
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