- #1

brandon26

- 107

- 0

What is its average acceleration:

I worked it out but it was wrong, what i did was:

average acceleration = average velocity / time and got 4.8ms^-2.

Someone help please?

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- Thread starter brandon26
- Start date

- #1

brandon26

- 107

- 0

What is its average acceleration:

I worked it out but it was wrong, what i did was:

average acceleration = average velocity / time and got 4.8ms^-2.

Someone help please?

- #2

David

Science Advisor

- 41

- 0

So what you have to do is work out what the acceleration is at any point on the semi-circular path (you should know an expression for the radial acceleration of a body moving in a circle.) Then you need to integrate over the path to get the average acceleration. You can do that integral by components, and you can see by symmetry of hte situation that one of the integrals is zero.

So when you figure out the geometry, etc, you'll find that you basically need to work out what one component of the acceleration is along the semi-circular path, and then average it using the integral.

- #3

Päällikkö

Homework Helper

- 519

- 11

Isn't it simply [tex]a_c = \frac{v^2}{r}[/tex]?

What's a__semi__circular path?

What's a

- #4

David

Science Advisor

- 41

- 0

- #5

Doc Al

Mentor

- 45,461

- 1,947

[tex]\vec{a}_{ave} = \frac{\Delta \vec{v}}{\Delta t}[/tex]

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