Simple harmonic motion Definition and 910 Threads

Homework Statement A 2-kg block is dropped from a height of 0.45 m above an uncompressed spring. The spring has an elastic constant of 200 N/m and negligible mass. The block strikes the end of the spring and sticks to it. (a) Determine the speed of the block at impact (b) Determine the period...

Homework Statement Two pendulums of time periods 3s and 7 s respectively start oscillating simultaneously from two opposite extreme positions. After how much time they will be in the same phase? Homework Equations The Attempt at a Solution Now what exactly is the question...

Simple harmonic motion! :( Homework Statement A 65-kg person jumps from a window to a fire net 18m below, which stretches the net 1.1m. Assume that the net behaves like a simple spring, and (a) calculate how much it would stretch if the same person were lying in it. (b) How much would it...

[b]1. A 14.7g mass is attached to a frictionless horizontal spring. After the spring was stretched a certain distance and released, its maximum speed was found to be 4.22 m/s. If the speed at x = -2.84 cm is 1.63 m/s, what is the frequency of the oscillating spring? [b]2. PEe = kx^2/2 E=KE...

Homework Statement When a mass is hung from a spring, the spring elongates by 10.6cm. What will the period of the resulting oscillations be if the mass is displaced from equilibrium? Homework Equations T=2(pi)\sqrt{m/k} The Attempt at a Solution I have no clue what do with this...

Homework Statement An electric dipole in a uniform horizontal electric field is displaced slightly from its equilibrium position, where theta is small. The separation of the charges is 2a, and each of the two particles has mass m. Assuming the dipole is released from this position, show that...

Homework Statement I need help finding velocity as a function of position, the t in the argument of tan, causes a problem for me when integrating. can someone help, maybe my approach is completely off, i am trying to fing the unknown phi, knowing the velocity and acceletation when position...

Homework Statement A mass is oscillating on a spring with a period of 1.45 s. At t = 0 the mass has zero speed and is at x = 8.80 cm. What is the magnitude of the acceleration at t = 2.30 s? Homework Equations x(t)=Acos(wt + phi) a(t)=-Aw^2cos(wt + phi) a=w^2x T=2pi/w The Attempt...

Homework Statement I have that a oscillating mass undergoes shm. It is accelerated (forced oscillation) by 1ms^-2, for time pi/2 as it goes through the origin and then accelerated by -1ms^-2 for another time pi/2, then it is at the origin after the second acceleration. I need to determine...

Could anybody temme what wuld happen to the time period and the amplitude of oscillations if a mass attaching to a ruler, lying horizontally on the table, is broken ...then what effect would this have on the amplitude and time period of oscillations? I say that amplitude would increase...

Simple Harmonic Motion Question... Advise required please! A vehicle engine has a stroke of 180mm. The motion of the piston is simple harmonic. calculate max linear velocity and acceleration at 4200rpm? Calculate max force to the crankshaft if the piston has an effictive mass of .35kg at an...

Homework Statement The rise and fall of water in a harbour is simple harmonic. The depth of water varies between 5.0 m at low tide and 9.0 m at high tide. The time between sucessive low tides is 12 hours. A ship, which requires a minimum depth of 6.0 m approaches the harbour at low tide, how...

Homework Statement The position of a an air-track cart that is oscillating on a spring is given by (12.5cm)cos[(18.0s-1)t]. At what value t after t=0 is the cart first located at x=12.2 cm? The Attempt at a Solution 12.2 cm = (12.5cm)cos[(18.0s^-1)t]. How do I factor t out? Thanks

Homework Statement A 100-g block hangs from a spring with k = 5.2 N/m. At t = 0 s, the block is .20 m below the equilibrium position and moving upward with a speed of 2.10 m/s. What is the block's speed when the displacement from equilibrium is .324 m? Homework Equations w0=sqrt(k/m)...

Homework Statement A particle oscillates with an s.h.m of amplitude 50mm and a maximum speed of 0.25 m/s. Calculate the pulsatance, period and maximum acceleration Homework Equations x = a sin(wt) dx/dt=awcos(wt) d2x/dt2=aw^2sin(wt) Put in x=0.05sin(wt) 0.25=0.05wcos(wt)...

Homework Statement A 450 g object oscillates from a vertically hanging light spring once every .55 s. The object is released with the spring compressed by 10 cm from the equilibrium position. What is the velocity of the object 3.00 s after it is released? Homework Equations...

Homework Statement A vertical spring, fixed at the upper end, has a mass attached to the lower end. When the spring is given a small extension it was observed to oscillate at a rate of 45 cycles per minute. When an additional 160g mass is attached to the spring, it oscillated at a rate of...

simple harmonic motion ! Homework Statement An ideal spring has a spring constant k=25N/M and is suspended vertically. A 1kg object is attatched to the unstrechted spring and released. It then performs ocillations. What is the magnitude of the acceleration of the body when the extension of...

Homework Statement An ideal spring has a spring constant k=25N/M and is suspended vertically. A 1kg object is attatched to the unstrechted spring and released. It then performs ocillations. What is the magnitude of the acceleration of the body when the extension of the spring is at maximum...

Homework Statement I have been stuck on this question for quite some time. I'm trying to study for the test and actually have the answer, but I can't figure it out. The answer is 1.3X10-6cm/s2 The following graph represents an object oscillating in simple harmonic motion. What is the...

Homework Statement For a particle in simple harmonic motion, show that vmax = (pi/2) vaverage, where vaverage is the average speed during one cycle of the motion. Homework Equations v(t) = -vmaxsin(wt + phi) vmax = 2piA/ T = wA The Attempt at a Solution I'm really not sure at...

Homework Statement a 700 g cylinder of base area a=30 cm^2 and height 40 cm is floating upright in water. A 50 g mass, resting on top of the cylinder is suddenly removed. find the restoring force. Homework Equations The Attempt at a Solution

Homework Statement A piston in an automobile engine is in simple harmonic motion. Its amplitude of oscillation from the equilibrium (centered) position is ±6.87 cm and its mass is 1.472 kg. Find the maximum velocity of the piston when the auto engine is running at the rate of 3220...

Homework Statement [PLAIN]http://img819.imageshack.us/img819/4509/mectu.jpg Homework Equations Above The Attempt at a Solution My attempt so far: B=C \Rightarrow \dot{\omega _1}=0 \Rightarrow \omega _1\;\text{is\;constant} \dot{\omega _2}=\omega _3 \omega _1 -...

Homework Statement I am wanting to learn how to rearrange equations for simple harmonic motion equations (I am new to LaTeX so gimme a break!) mostly to find time (t) as the subject, but I am not very good at rearranging equations with sin/cos etc and want to get better at it, partly homework...

Homework Statement In static equilibrium a spring is stretched 0.25 m by a hanging mass. If the system is initially moved up to the unstretched position and released with zero velocity, determine position of the mass (in m) after 4.2s. Take the equilibrium position to be zero and up the...

Phase Angle / Phase Question - Simple Harmonic Motion Homework Statement If I were given a function of displacement for simple harmonic motion in the form of: x = Acos(\omegat + \phi) Would the phase angle, \phi, always be the same? Say if I derived the equations into forms for...

you have a transverse sinusoidal wave on a string, and say there's a point A on that string. does point A oscillate in simple harmonic motion with a frequency that's equal to the frequency of the wave?

Homework Statement I need to find the speed, at time t=0.015s, of a hydraulic valve component undergoing sinusoidal vibrations. The frequency of the vibrations is 25Hz, the amplitude is 2cm and the angular frequency is 157 s-1 Homework Equations The equation for speed of sinusoidal...

Homework Statement Hi I just did a physics lab that involved a Simple Harmonic Motion. What I did was have a mass hung on a spring and then put different masses and find their Period (T) and time for 5 cycles going up and down. RESULTS: Mass (kg) 0.100 0.150 0.200 0.250 0.300...

Homework Statement A ball rolls on a circular track of radius 0.61 m with a constant angular speed of 1.3 rad/s in the counterclockwise direction. A. If the angular position of the ball at t= 0 is \theta= 0, find the x component of the ball's position at the time 2.6 s. Let \theta= 0...

I need to calculate the frequency of sinusoidal vibrations in simple harmonic motion. The only known values that I have are the acceleration amplitude and the vibration amplitude. Is there a way of calculating the frequency of vibration without knowing the period of the oscillations?

Homework Statement I am confoosed, I think I need to find T first but not sure I am using the right equations, is vibrational amplitude both length & A? A hydraulic valve is subjected to sinusoidal vibrations to test the component under conditions of simple harmonic motion. The first test...

Simple harmonic motion [URGENT I have an exam tomorrow morning] Homework Statement Hi there. I don't know how to solve this problem about simple harmonic motion. It says: A particle of 100 grams is animated with a simple harmonic motion, which starts 20cm from its equilibrium position, where...

Homework Statement Given a rod with length it is hinged thus it can freely rotate. An object is attached to the end of the rod and it is brought all the way vertically up. Then a slight disturbance and it flies down (from equilibrium). How long does it take for it to come down to the minimum...

In an experiment to determine g using simple harmonic motion using a harmonic oscillator, a motion sensor and data logging equipment. I have all the variables but I can't figure out how to get S in the following equation: T^2 = ((4pi^2)/k)M + ((4pi^2)/k)S ...(1) I have a graph of T^2 (the...

Homework Statement Homework Equations x = A cos(wt-phi) The Attempt at a Solution Using the above equation for t, calculating values for t1 at -0.05 and t2 at 0.05, as well as assuming phase angle phi is zero, I get an answer of over 40 seconds. I think I may be using the wrong equation or...

Homework Statement Two positive charges +Q are affixed rigidly to the x-axis one at x = -d and the other at x = +d. A third charge +q of mass mwhich is constrained to move only in the x-axis is displaced from th eorigin by a small distance s << d and then released from rest. Show that q+...

Please help me, Question The equation of motion of a mass is given as x = (0.2m) sin (3t). Find the velocity and acceleration of the mass when the object is +5cm from its equilibrium position.

Homework Statement A machaine part moves in a straight line with SHM. At positons 15mm and 20mm from the center of oscillation it has velocitys 2 m/s and 1 m/s respectively. find the amplitude and period of the motion. and the shortest time taken for the part to travel between these 2...

Homework Statement When the electron in a hydrogen atom bound to the nucleus moves a small distance from its equilibrium position, a restoring force at a given radius is given by: k = e^2/4*pi*epsilon*r^2 where r = 0.05 nm may be taken as the radius of the atom (the equilibrium radius of...

Homework Statement A particle is oscillating in simple harmonic motion with period 4.5 ms and amplitude 3.0 cm. At time t = 0, the particle is at the equilibrium position. Calculate, for this particle: a) frequency b) the angular frequency c) the maximum speed d) the maximum acceleration e)...

(apologies for the formatting, mixing LaTeX and regular text looks ugly, but I don't know how to do it otherwise) Homework Statement This is problem 3-7 from Thornton and Marion's Classical Dynamics. A body of uniform cross-sectional area A = 1 cm2 and of mass density \rho=0.8 g/cm3 floats...

Homework Statement A disk of mass M, attached to a spring of constant k fixed to a vertical wall can oscillate freely in a frictionless horizontal plane. A small block of mass m is put on the disk with which there is friction under a coefficient of friction \mu. What is the maximum amplitude...

Hi, Can anyone help me with this question? The potential energy of mass (m=6KG) that is connected to a spring is given by: U(x) = 5x ^ 2 -10x +12 Find the period of the small fluctuations around the equilibrium point (in seconds).

Homework Statement A particle moves with amplitude A and period T (see figure). Express the following in terms of A and T and numberical constants. a) The time at which the phase is pi/2 b) maximum v c) max a d) time at which acceleration is a maximum Homework Equations The...

Homework Statement The motion of a particle is given by x=(6.0m) cos(0.586t +0.72) a) find amplitude b) find period c) find the first time for t>0 when v=0 d) find the max acceleration e) find the phase at time t = 1.38s Homework Equations T = 2pie/omega v = -A omega sin omega*t...

Homework Statement Hello, I'm doing a simple pendulum lab where I measure the difference in period as I increase the length of the pendulum. Simple enough. However, I'm having trouble analyzing my graphs of a linear versus a curve fit. Can someone explain why the curved/nonlinear fit is...

Hi all, I recently learned about simple harmonic motion. In all the questions I have done, the springs are massless. I would like to know what happens when the spring has mass. I think that if the spring has mass, then the force in the spring will also have to counteract the weight of the...

Homework Statement A particle undergoes simple harmonic with amplitude of 10cm and frequency 5Hz. If it passes through the equilibrium position (x=0) at time t = 0, calculate the position, velocity and acceleration of the particle at t = 3.5m5 ms. The Attempt at a Solution Given...