How can we ensure a 90 degree oscillation when pulling a slinky spring?

[hulk78]

I have a question that asks me 'suggest how you would ensure that the propagation of the slinky spring is at 90°, when the spring is clamped to 2 clamp stands?

 

[SammyS]

I have a question that asks me 'suggest how you would ensure that the propagation of the slinky spring is at 90°, when the spring is clamped to 2 clamp stands?

You haven't given near enough information for anyone to help you.

Some wise-aleck is likely to come along and tell you to set the thermostat to the appropriate temperature.

 

[hulk78]

You haven't given near enough information for anyone to help you.

Some wise-aleck is likely to come along and tell you to set the thermostat to the appropriate temperature.

sorry if i wasn't very clear, what i wanted to ask was wether there was any way to ensure when pulling a slinky it oscillates at 90 degrees? like in the image bellow
https://www.google.es/search?hl=ca&...gue%2Factivities%2Factivity_waves.htm;700;217