Physics-Extension of a spring to nearest mm

Hello!

I calculated my mean extension value for a spring when mass is loaded onto a spring and measured the extension in cm. I got 2.6cm as the extension.

But I was asked to calculate it to the nearest mm!
What is 2.9cm to the nearest mm? Also what is 14.9cm to nearest mm?

I know this isn't complicated but could someone please help me?

Thanks,
Anna.

Reply 1

TSR Jessica

19

Sorry you've not had any responses about this. :frown:

Are you sure you've posted in the right place? :smile:

Here's a link to our subject forum which should help get you more responses if you post there. :redface:

You can also find the Exam Thread list for A-levels here and GCSE here. :dumbells:

Just quoting in Puddles the Monkey so she can move the thread if needed :h:

Spoiler

Reply 2

username2452153

16

Original post by Anna-18

Hello!

I calculated my mean extension value for a spring when mass is loaded onto a spring and measured the extension in cm. I got 2.6cm as the extension.

But I was asked to calculate it to the nearest mm!
What is 2.9cm to the nearest mm? Also what is 14.9cm to nearest mm?

I know this isn't complicated but could someone please help me?

Thanks,
Anna.

As, 0.1 cm = 1 mm, 2.9cm and 14.9cm are 2.9cm and 14.9cm respectively.
Had it been 14.666666...cm then to the nearest mm it would be 14.7cm.

Reply 3

kelefi

19

Original post by Anna-18

Hello!

I calculated my mean extension value for a spring when mass is loaded onto a spring and measured the extension in cm. I got 2.6cm as the extension.

But I was asked to calculate it to the nearest mm!
What is 2.9cm to the nearest mm? Also what is 14.9cm to nearest mm?

I know this isn't complicated but could someone please help me?

Thanks,
Anna.

multiply your answer in cm by 10 to get your answer in mm. then you can round that to the nearest whole number to get your answer to the nearest mm :smile:

Physics-Extension of a spring to nearest mm

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