How do you find the centre of gravity?

[gazing600000]

Hello I am stuck on this question here(in attachments )

How do you find the centre of gravity ?

 

[Doc Al]

How do you find the centre of gravity ?

What do you think? What's the definition of center of mass?

 

[gazing600000]

Well The centre of Gravity I believe is the point of which all of the weight of the object acts upon.

 

[Doc Al]

Well The centre of Gravity I believe is the point of which all of the weight of the object acts upon.

That's true. Another way to define it is as the average location of the mass in an object.

Read this: Center of Mass

 

[gazing600000]

Yes but how would you solve the question then

 

[Doc Al]

Yes but how would you solve the question then

Did you read the link I gave?

 

[gazing600000]

Yes I did

But surely there is a less complicated way of working out the centre of mass on this question

 

[Doc Al]

Please state the exact question you are trying to answer. It's not clear from your attachment.

 

[gazing600000]

Find the centre of gravity or mass of these objects

 

[Doc Al]

Find the centre of gravity or mass of these objects

Well, what do you think?

Start with the symmetric dumbbell. Where do you think the center of mass would be?

(The link I gave tells you how to calculate the center of mass.)