Springs and Pendulums
Über den Vortrag
Der Vortrag „Springs and Pendulums“ von Jared Rovny, PhD ist Bestandteil des Kurses „Periodic Motion“.
Quiz zum Vortrag
An object is oscillating with a spring. What is the relation between the direction of displacement of the object from equilibrium and the direction of the force applied by the spring on the object?
- They are in the opposite direction
- They are in the same direction
- The displacement can be positive or negative but the force is always positive
- The displacement can be positive or negative but the force is always negative
- The force is 0 when the displacement is at its maximum in the positive or negative direction
Which of the following is true about an object oscillating on a spring when it is at its maximum amplitude?
- Its velocity is zero
- Its velocity is maximized
- Its direction of motion is away from equilibrium
- Its direction of motion is towards equilibrium
- The object at its maximum amplitude is stationary hence the net force on the object is zero
How will the frequency of spring oscillations change if the spring constant is quadrupled?
- The frequency will double
- The frequency will halve
- The frequency will quadruple
- The frequency will quarter
- The frequency will remain the same
What is the relationship between frequency f and period P in a periodic motion?
- f = 1/P
- f = 2π / P
- f = P / 2π
- f = 2πP
- f = P
A mass m attached to a spring with constant k, is undergoing a periodic motion with a maximum amplitude of A. With knowing the displacement x from equilibrium, how is the speed of mass m determined?
- Using the conservation of energy relation: kA²/2 = kx²/2 + mv²/2
- Using conservation of momentum
- Using the relation: kA²/2 = mV²/2 , with V being the maximum velocity of motion
- With knowing the acceleration a = kx/m and the time of motion t, v can be determined by v = at + v₀ . v₀ is the initial speed which is zero.
- Using the relation: x = v²/2a, with the acceleration a given by a = kx/m
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Dozent des Vortrages Springs and Pendulums
Jared Rovny, PhD
Dr. Jared Rovny has been a Lecturer at Yale University in Connecticut, USA since 2013.
He obtained his PhD in Physics from Yale University in 2019. He was awarded the D. Allan Bromley Graduate Fellowship in Physics in 2019 and the Princeton Quantum Institute Postdoctoral Fellow in 2020.
Currently, he works with Yale's Center for Teaching and Learning at Yale University.
Due to his achievements, he earned the Yale College Prize Teaching Fellowship for his work in PHYS 171 (University Physics for the Life Sciences).
Within Lecturio, Dr. Rovny teaches courses on Physics.
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