A particle undergoes simple harmonic motion. Which of the following can b(l.. glq0bhl ze an expression of acceleratio.hlb (lqgl0z.n $a$ in terms of displacement $x$ and a constant value $k$?

  Below are the graphs of the kinetic and potential energies against displacement $s$ for an object exhibiting simple harmonic motion.


Which of the positions marked on the axis represents the location of maximum speed?

  A mass M hangs in equilibrium on a spring. The mass is pulled down 10 $cm$ below the equilibrium position and released. It oscillates vertically about the equilibrium position performing simple harmonic motion.
If it takes 0.5 $s$ after release to return to its equilibrium position, which of the following is true for its first oscillation?

  A mass-spring system has a periodhu7w,.;s) )ldvce c(k)junf r of $T_0$​. Another mass-spring system has a mass twice as large with a spring that requires four times as much force to obtain the same extension as the first system.
What is the new period in terms of $T_0$?

  An object on a horizontal spring performs simple harmo/.twco(o :h* ci)gkd bu) mxe ak6y5r;nic motion. The position omou x;gwc:kdiyo r 6)/bc.a*5tk(he ) f the object as a function of time is given by $x=5\cos (2t).$
Which of the following expressions gives the acceleration of this object as a function of time?

  An object executes si g099yogwx hm(g ak30dmple harmonic motion with an amplitude of $x_0$​. Which graph shows the relationship between the kinetic energy $E_k$​ and the displacement $x$ from the equilibrium position of the object?

  A longitudinal wave is travelling in a medium from left to right. The diagram below is a snapshot of plane wave fronts of showing position of particles $X$ (center of compression) and $Y$ (center of rarefaction) in the medium at t=0 s.


1.Distinguish between a transverse wave and a longitudinal wave.
2.In the graph below, the solid line shows the variation of displacement $s$ of particle X with time, and the dotted line shows the variation of displacement of particle Y with time.

(1)Show that the angular frequency $ω$ of the oscillating particles in the medium is $3.9\,rad\,s^{−1}$.
(2)Calculate the speed of the wave in the medium.v=   $cm\,s^{-1}$
3.(1)State the phase difference between particles X and Y.
(2)Determine the speed of particle Y when t=2.3 s.v=   $mm\,s^{-1}$

  For an object undergoing simple harmonic oscillation, ther .1 nenm*v4 fijx43arbw l*8z graphs show the variation of two quantities for themr r*b4n*jwxafn.i3 4e1v8 z l object with time t。


Which two quantities could be represented by these graphs?

  For a body executing simple harmonic motion, which statement is not possible?

  A simple pendulum undergoes simple harmonic motion. The graph sho w36 4 oi0ug:wcgio9pbws the variation of a quantity wp0iwucgoo6:93g b4i $y$ with horizontal displacement $x$ from the equilibrium position.


Which of the following quantities could be represented by quantity $y$?
I. The velocity of the pendulum

II. The kinetic energy of the pendulum
III. The potential energy of the pendulum

  A mass-spring system executes simple harmonic motion with a period T in k/(yht- u9fq .;xei cxa vertical plane. What is the period when the oscillating mass is doubled and the system is brought to a planet where the gravitational fielt(xqxc;euf9y .k - hi/d strength at the surface is halved?

  The graph below shows the variation with displacement $x$ of the acceleration $a$ from the equilibrium position of a particle that undergoes simple harmonic motion.


The magnitude of the slope of the graph is directly proportional to

  Two simple pendulums with len7 l; /wfuv-sfjgths $16L$ and $9L$ have masses $4M$ and $3M$ respectively. The period of the mass of $4M$ is $T$. What is the period of mass of $3M$?

  A body performs simple harmonic motion (shm). Which of the following could be the speed against the time graph for one period of motion?

  The bob on a conical pendulum is rotated at constant speed such0 vqcgcjquz+o z** +e ihjl-04 that it describes a horizontal circle of diameter 15 cm. A lamp is placed so that the h- ojc4vg +elqi*0qz+0j*cuzshadow of the bob projected on a screen describes simple harmonic motion. What is the displacement of the shadow after the bob has traveled a total distance of $30π\,cm$?

  Two identical objects P and Q are gbqdd6 u;aj.. ggyyt)v f524w connected to identical springs. Both P and Q are performing simple harmonic motion (SHM) around equd) ygbja4 u.gqwg5f6 ;2v.dt yilibrium level O.


The diagram shows positions of P and Q at time $t=0$. Which graph shows how kinetic energy of P and Q vary with time t?

  A spring-mass system executes simple harmonic motion with an amplitude of .tqsx)- an8c kx0/bdr 20cm and maximum elastic potentir/dbx)-q0x scn8 t.akal energy of 100J. What is the displacement of the mass when the elastic potential energy of the system is 25J?

  A 2.0 kg object is attached to a spring and vibrates vertically.


The graph below shows the variation of the acceleration of the object with the displacement x.

1.(1)State and explain whether or not the oscillation of the mass is simple harmonic motion.
(2)On the figure above draw an arrow to show the direction of the acceleration of the mass which is displaced by x.
2.(1)Show that the slope of the graph equals to $\frac{-k}{m}$
(2)By using the graph calculate the spring constant, $k$ of the spring.k=   $Nm^{-1}\,kgs^{2}$
3.For the same spring-mass system, show that the acceleration of the object is$10\,cms^{−2}$ when the mass is displaced by 0.12 cm. a≈   $cms^{-2}$

  A particle performs simple harmonic motion with a frequr aob;040ebfa fe 1dy7ency of $0.05Hz$ The distance traveled by the particle in one complete oscillation is $16\,cm$ Which of the following graphs shows a correct variation of its position?

  An object with a mass of $m$ is connected to a spring on a frictionless horizontal surface.

The object is displaced by $x$ from its equilibrium point $O$ to point $A$ and executes simple harmonic motion with a period of T. Which of the following are true if the object is displaced by $2x$?

I. The angular frequency of the oscillation will be less.
II. Total energy of the object will be greater.
III. The average speed of the object will not change.

  The graph shows the variation with time $t$ of the displacement $s$ of an object suspended by a spring. At what time is the acceleration in the negative direction at a maximum?

  A mass-spring system rests on a frictionless surface. The mass is pulled to the right and released from point X at $ t=0\,s$.


following correctly shows directions of velocity and acceleration of the mass at $t=10\,s$?

  1.A small ball of mass o)j( 7nlyy1rn $m$ is oscillating on a frictionless curved surface.

$x$ is the horizontal displacement from the middle point $O$ of the motion. The shape of the surface is such that the relationship between net force in the horizontal axis and displacement is given by the expression
$F=-m\frac{gx}{r}$

where g is the acceleration of free-fall and r is the radius of the curvature of the surface.
Outline why the ball performs simple harmonic motion.

2.The radius r of the frictionless surface and the mass m of the ball are $10\,cm$ and $20\,g$ respectively.
(1)Show that $ω=\sqrt{\frac{g}{r}}$
(2)Calculate, in $s$, the time taken for the ball to reach point $O$ after being released from the highest point.The time needed for the motion=   s
(3)Draw, on the axes, the graph to show how the kinetic energy of the ball varies with displacement during its motion from the start until it reaches point $O$. Be sure to include the values for the vertical and horizontal intercepts.

  1.Define simple harmonic motion (SHM)

2.An object of mass $5.0\,g$ undergoes simple harmonic motion. The graph shows how displacement $x$ of the object from the equilibrium varies with time $t$.

(1)Calculate, in $rads^{−1}$, the angular frequency of the oscillation.ω=   $rads^{-1}$
(2)Calculate, in N, the maximum net force acting on the object towards equilibrium.Maximum force=   N
(3)Sketch a graph to show how velocity varies with time by using the grid lines below. (There is no need to add values for the y-axis)

3.A metal block connected to a wall with a horizontal spring is oscillating on a rough surface which has a constant coefficient of dynamic friction. Air friction can be ignored.

Deduce whether the metal block executes simple harmonic motion and explain your reasoning.

  A simple pendulum executing simple harmonic motion is release s9u j2qctgv6q2z sy1(d from one end and re9qu2j sc1ts( v q6gyz2aches equilibrium position in $2\,s$. Just after the equilibrium position, the length of the pendulum is reduced to one-fourth of its initial value because of wrapping around a nail.


What is the period of the simple pendulum?

  The graph below shows the variation with displacement of kinetic energy of a 0.20 kg object which is performing simple harmonic motion.


1.Use the graph to determine the total mechanical energy of the object.$E_k​ max$=   mJ
2.On the graph, draw a dotted line that shows the variation with displacement of potential energy of the object.
3.Use conservation of energy to show that the speed of the object is approximately $1.2\,ms^{−1}$ when the displacement is $10\,cm$.v≈   $ms^{-1}$

  An object undergoes simple harmonic modlbg8x9c2-v lif: t u7tion with a period of 2s. The amplitude of the motion is 2m and oscillatd8x9l:-7 utb lf 2igvcion starts from maximum negative displacement. Which of the following represents the velocity of the motion?

  A body with maximum potential ;d:apay; qoled 0j9z 2energy $E_p$​ undergoes simple harmonic motion with amplitude $x_0$​. The body is released from rest from maximum displacement. What is the magnitude of the change in potential energy of the system after the body has moved a distance of $\frac{x_0}{4}$​​?

  An object undergoes simple harmonic motion. The graph f pkc:; 9azk-wshows how acceleration $a$ varies with displacement $x$ from the equilibrium position of the object.


Which of the following gives the displacement of the object when its kinetic and potential energies are equal?

  A metal container filled with sand is stationary on a frictionless surface. It is connected to a wall with a horizontal spring.


The container is pulled in one direction and released. It starts to execute simple harmonic motion with a period of T and a maximum velocity of $v$. Which of the following graphs correctly shows how the velocity would differ if it were released with the same amplitude but with less sand in the container?

  In an experiment to determine the acceleration6 pp:u4wnxylys 3gsdv9 cmefg8/ + 5f7 due to gravity, a student sets up a simple pendulum and varies the length ofsme8: +7nf lpd 94g5p6cxufyw3/gysv the string by a fixed amount and records the time for 15 oscillations.
Initially, the pendulum starts with a period of $1.0\,s$. The length is then increased by 16%. What will be the approximate percentage increase in the period of the pendulum for the new length?