Jump to content

Log in or register to remove this advert

Rope testing question


Steve Bullman
 Share

Recommended Posts

Log in or register to remove this advert

2 minutes ago, Steve Bullman said:

So I need to suspend a 25kg weight basically 

You mean 25 Newton!   No you get 2.5 litre of water an that's 25 Newton's of mass  . K

Edited by Khriss
( are you testing garden string )
Link to comment
Share on other sites

4 hours ago, Khriss said:

You mean 25 Newton!   No you get 2.5 litre of water an that's 25 Newton's of mass  . K

 

4 hours ago, Steve Bullman said:

Surely that can’t be right either?

 

My girlfriend is starting a little business selling baby teething products, she needs to get them tested and that’s the criteria 
 

yes it’s basically a piece of string 

 

At average gravity on Earth (conventionally, g = 9.80665 m/s2), a kilogram mass exerts a force of about 9.8 newtons. An average-sized apple exerts about one newton of force, which we measure as the apple's weight.[4]

1 N = 0.10197 kg × 9.80665 m/s2    (0.10197 kg = 101.97 g)
So Khriss gave a good approximation (water is 1kg/litre)
these questions are fairly common - in Bing etc type in 25N = kg
will return25 newtons = 2.54929053 kilograms-force
so round the answer to 2.55 kg (approx 2litres plus 550ml water) if you want to go all sciency you can weigh the container and deduct one ml of water for each gram the bottle etc weighs
Edited by tree-fancier123
round not truncate
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  •  

  • Featured Adverts

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.