Let the initial amplitude of the SHM be A0 . The energy of SHM is proportional to square of the amplitude. Therefore the initial energy E0 is,
k is the constant of proportionality,
After N oscillations the amplitude wil be,
Therefore the Energy after N oscillations is,
Now, for E to become 0.69E0 the number of oscillation required can be calculated by the equation,
The oscillation period is 0.840 s. This period remains same for all oscillations, so, the time taken is,
Damped SHM motion A mass M is suspended from a spring and oscillates with a period...
Damped SHM motion A mass M is suspended from a spring and oscillates with a period of 0.980 s. Each complete oscillation results in an amplitude reduction of a factor of 0.985 due to a small velocity dependent frictional effect. Calculate the time it takes for the total energy of the oscillator to decrease to 45% of its initial value. Submit Answer Incorrect. Tries 3/6 Previous Tries
23.104 RLC Series AC Circuits H An RLC series circuit has a 1.90 k resistor, 170 mH inductor, and a 28.0 nF capacitor. Find the power factor at f 8.70 kHz. Tries 0/10 Submit Answer What is the phase angle at this frequency? Submit Answer Tries 0/10 If the voltage source has Vrms = 450 V, what is the average power at this frequency? Submit Answer Tries 0/10 Find the average power at the circuit's resonant frequency Tries 0/10 Submit...
7.38 Power Part A How long will it take an 992-kg car with a useful power output of 35.6 hp (1 hp 746 W) to reach a speed of 14.0 m/s, neglecting friction? Tries 0/10 Submit Answer Part B How long will this acceleration take if the car also climbs a 3.45-m high hill in the process? Tries 0/10 Submit Answer O 1998-2019 by Florida State University. All rights reserved The contents of this web site are for use by...
27.85 Polarization The angle between the axes of two polarizing filters is 45.0°. By how much does the second filter reduce the intensity the light coming through the first? 0.500 You are correct. Previous Tries Your receipt no. is 155-7465 50.0°. By how much does the second filter reduce the intensity of the light coming through the first? The angle is changed 0.999 Incorrect. Tries 4/10 Previous Tries Submit Answer 1998-2019 by Florida State University. All rights reserved The contents...
21.66- RC Circuits A 2.50-and a 7.30-uF capacitor can be connected in series or parallel, as can a 29.0-and a 100-kΩ resistor. Calculate the four RC time constants possible from connecting the resulting capacitance and resistance in series. Both the resistors and the capacitors connected in series 0.240 s You are correct. Your receipt no. is 155-8312 The resistors connected in series and the capacitors connected in parallel 1.26 s You are correct. Your receipt no. is 155-7049Frevious Tries Both...
8.30- Elastic Collisions in One Dimension Part A A 83.0-kg ice hockey goalie, originally at rest, catches a 0.150-kg hockey puck slapped at him at a velocity of 36.0 m/s. Suppose the goalie and the ice puck collision and the puck is reflected back in the direction from which it came. What is the final velocity of the goalie? have an elastic Submit Answer Tries 0/5 Part B What is the final velocity of the puck? Tries 0/5 Submit Answer...
A damped harmonic oscillator consists of a block of mass 5kg and a spring with spring constant k = 10 N/m. Initially, the system oscillates with an amplitude of 63 cm. Because of the damping, the amplitude decreases by 56% of its initial value at the end of four oscillations. What is the value of the damping constant, b? What percentage of initial energy has been lost during these four oscillations?
A damped harmonic oscillator consists of a block (m = 3.00 kg), a spring (k = 11.1 N/m), and a damping force (F = -bv). Initially, it oscillates with an amplitude of 28.7 cm; because of the damping, the amplitude falls to 0.760 of the initial value at the completion of 6 oscillations. (a) What is the value of b? (Hint: Assume that b2 << km.) (b) How much energy has been lost during these 6 oscillations?
Angel David Soto (Student-section: 3) Main Menu Contents Grades PHY 2049c-Gen Physics B (Spring 2019 Sections 2-5) 4 Timer Electric Field Lines and Potential The figure shows the E-field in the plane of two point charges. Determine for each of the following s statements whether it is correct or 02 incorrect The E-field at 'e' points west. Incorrect Correct The E-field at 'b' points directly toward Q2. Correct B The magnitude of the E-field at'a, is larger than at e....
Aball of mass m is attached to a massless swing of length L. The swing is released from an angle θ from the vertical and, when it is in the vertical Ball on a Swing h above the floor. The ball then undergoes a projectile motion, Find an expression for the range R of the ball. Your expression should be in terms of the given position, it hits a stop which detaches Find an expression for the speed the ball...