Please help

Question

Please help

anonymous · Answer

the second part http://screencast.com/t/3pIOBbPjv

anonymous · Answer

@ganeshie8 @Hero

anonymous · Answer

@satellite73 @amistre64

anonymous · Answer

@Luigi0210  @mathslover

anonymous · Answer

@AravindG

aravindg · Answer

Greatest Kinetic Energy is achieved when it passes through the point of equilibrium.

anonymous · Answer

yes...but in this case, there is already an extension of 2m. could you please show me how to apply the energy equation

aravindg · Answer

No the equilibrium position was at the midpoint. The 2m extension was made to start the motion.

anonymous · Answer

it says AB is 6m, which means there is already an extension of 2 m, so how do we find the equilibrium position

vincent-lyon.fr · Answer

AravindG is right, greatest KE is ALWAYS encountered at equilibrium position for conservative systems.
The reason is that equilibrium is a minimum of PE. 
For a conservative system, since KE + PE = cst, KE is maximum.

vincent-lyon.fr · Answer

To find equilibrium position, first suppress the weight: P will lie at midpoint between A and B, attached to 2 identical springs of constant k. Since both springs act directly on P, they are in parallel, hence a 2k equivalent constant.
Now add a 6N force. At equilibrium, displacement of P from midpoint will be F/2k = mg/2k.

anonymous · Answer

thanks :)

vincent-lyon.fr · Answer

@thushananth01 Have you managed to finish your problem?