physics
posted by jake .
Which one of the following statements about an object performing Simple Harmonic Motion is TRUE?
Select one:
a. The object reaches its maximum speed as it passes through the equilibrium point.
b. The objectâ€™s velocity is never zero.
c. The object has a constant velocity.
d. The object has a maximum magnitude of acceleration at the equilibrium point.
e. When the objectâ€™s velocity has its most negative value, then the acceleration has a maximum magnitude.

x = a sin wt
v = a w cos wt
a = a w^2 sin wt = w^2 x
F = m a = kx
when x = 0, equilibrium , sin wt = 0 and cos wt is 1. That is max velocity
when w t = pi/2, cos wt = 0 so v = 0
v = a w cos wt which is certainly not constant
a = a w^2 sin wt = w^2 x which is 0 when x = 0
v = a w cos wt max negative at t = 0
but then sin wt = 0 so acceleration is zero
Respond to this Question
Similar Questions

Physics
An object is attached to a horizontal spring. It is initially displaced by distance Δx from the equilibrium position and then released from rest. At what point of its motion along the xaxis reaches the object its highest total … 
physics
Which of the following statements is not true about a particle executing Simple Harmonic Motion? 
physics
A 9.00 kg object starting from rest falls through a viscous medium and experiences a resistive force = b , where is the velocity of the object. The object reaches one half its terminal speed in 5.54 s. (a) Determine the terminal speed. … 
PHYSICS
An object undergoes simple harmonic motion. During that motion the object needs 1.1 seconds to reach one point of zero velocity from the previous such point. If the distance between those points is 0.3 m, calculate the period. 
physics
the object is traveling in a circle,which one of the statements are true. choose all that apply? 
physics
An object with mass 3.0 kg is attached to a spring with spring stiffness constant k = 300 N/m and is executing simple harmonic motion. When the object is 0.020 m from its equilibrium position, it is moving with a speed of 0.55 m/s. … 
Physics
A 2kg object is attached to a spring and undergoes simple harmonic motion. At t=0 the object starts from rest, 10 cm from the equilibrium position. If the force constant of the spring k is equal to 75 N/m, calculate a. the max speed … 
Physics
An object with mass 8.2 kg is attached to a spring with spring stiffness constant 370 N/m and is executing simple harmonic motion. When the object is 0.16 m from its equilibrium position, it is moving with a speed of 0.31 m/s. Calculate … 
Physics
An object with mass 3.0 kg is executing simple harmonic motion, attached to a spring with spring constant k =210 N/m. When the object is 0.23 m from its equilibrium position, it is moving with a speed of 0.72 m/s. (a) Calculate the … 
physics
Question: Object A is moving at a maximum speed of 6m/s towards Object B. At 50 m away Object B accelerates from the approaching Object A at 0.3m/s^2. Does Object A catch up to Object B and if yes when?