مدرسة برديس التجريبية لغات

هل تريد التفاعل مع هذه المساهمة؟ كل ما عليك هو إنشاء حساب جديد ببضع خطوات أو تسجيل الدخول للمتابعة.

مدرسة برديس التجريبية لغات


    PERIODIC MOTION

    avatar
    omnia2010
    عضو
    عضو


    عدد المساهمات : 47
    نقاط : 51637
    تاريخ التسجيل : 04/04/2010

    PERIODIC MOTION Empty PERIODIC MOTION

    مُساهمة من طرف omnia2010 السبت أبريل 10, 2010 2:13 pm

    3Linear motion is when an object moves forward in a straight line. But there are times when the motion has constraints, such that it moves back and forth in regular motion. This is called periodic motion and can be seen in such examples of a weight on a string and seen how it swinging back and forth or a ball will bouncing up and down.


    Examples of periodic motion

    Periodic motion is any motion that repeats itself. Examples of periodic motion include a bouncing ball, vibrating spring, circular motion, and a pendulum.
    Bouncing ball

    If you drop a ball, it will start to bounce in a regular fashion. A good rubber ball or a super-ball will keep bouncing for a long time. Because of internal friction and air resistance, the ball bounces less and less each time, until it finally stops. A perfect ball-without friction-would bounce forever.
    Vibrating spring

    If you start a spring vibrating, it will continue to move back-and-forth for a long time. Internal friction slows it down or dampens its vibrations.
    Circular motion

    Spin a weight on a string around in circles. This is a periodic motion that repeats itself every rotation. The Earth rotates around the Sun in a periodic circular motion.
    Pendulum

    If you swing a weight on a string, it will go back and forth in regular periodic motion. Once it got started, such a pendulum would move back-and-forth forever if it was not for internal friction in the string and air resistance.
    periodic motion

    3Linear motion is when an object moves forward in a straight line. But there are times when the motion has constraints, such that it moves back and forth in regular motion. This is called periodic motion and can be seen in such examples of a weight on a string and seen how it swinging back and forth or a ball will bouncing up and down.


    Examples of periodic motion

    Periodic motion is any motion that repeats itself. Examples of periodic motion include a bouncing ball, vibrating spring, circular motion, and a pendulum.
    Bouncing ball

    If you drop a ball, it will start to bounce in a regular fashion. A good rubber ball or a super-ball will keep bouncing for a long time. Because of internal friction and air resistance, the ball bounces less and less each time, until it finally stops. A perfect ball-without friction-would bounce forever.
    Vibrating spring

    If you start a spring vibrating, it will continue to move back-and-forth for a long time. Internal friction slows it down or dampens its vibrations.
    Circular motion

    Spin a weight on a string around in circles. This is a periodic motion that repeats itself every rotation. The Earth rotates around the Sun in a periodic circular motion.
    Pendulum

    If you swing a weight on a string, it will go back and forth in regular periodic motion. Once it got started, such a pendulum would move back-and-forth forever if it was not for internal friction in the string and air resistance.

      الوقت/التاريخ الآن هو الأحد مايو 12, 2024 9:01 am