Quick Question on Conservation of Energy

[riseofphoenix]

Quick Question on Conservation of Energy! :(

#1.

For this one, I did

a) W = ½kx² = ½*410*.053² = 0.5758 J
b) V = √[2W/m] = √[2*.5758/2.00] = 0.7588 m/s

Are those right?
If so, can you help me solve Number 3 and 7 real quick!

#3.

#7.

 

[SammyS]

#1.

For this one, I did

a) W = ½kx² = ½*410*.053² = 0.5758 J
b) V = √[2W/m] = √[2*.5758/2.00] = 0.7588 m/s

Are those right?
If so, can you help me solve Number 3 and 7 real quick!

Those answers look good.

I suggest posting #3 & #7 each in its own thread.

You will also be expected to post an attempt at a solution for each.

#3.

#7.

 

[riseofphoenix]

I tried but no one responded...
just my luck.....

 

[riseofphoenix]

Those answers look good.

I suggest posting #3 & #7 each in its own thread.

You will also be expected to post an attempt at a solution for each.

I tried but no one responded...

 

[SammyS]

I tried but no one responded...

Did you post #3 ?