Posted by **daniel** on Tuesday, June 5, 2007 at 8:14pm.

hello,

i have this question. Calculate the average force of friction acting on a wooden block as it propelled along the floor?

i have done the following solution

first of all i don't know what average force of friction means?

i found the Fapplied by strecthing the elastic 50 cm with a newton scale and found the force as 7N? but i don't this is the right way to do it. i then streched the elastic 50 cm and proppled in the ground.

i found the mass of the block with a balance beam.

my question is how do i go about doing this?

should i find velocity and proplled it a particular distance from point a to point b? should i find acceleration and then solve for force? please help me out thanks. i don't understand.

average force is the average over time.

The energy coming from the spring is 1/2 k x^2 where x is the amount the spring is stretched.

averageforcefriction*distanceslide is the work done on friction. Measure the sliding distance, and ADD the distance the spring was stretched ...

Set them equal, and calculate averageforcefriction

## Answer this Question

## Related Questions

- science ( physics) - hello, i am having trouble with this problem. Calculate the...
- Physics - A 10-KG block is pulled along a rough horizontal floor by a 12-N ...
- physics - A 10-KG block is pulled along a rough horizontal floor by a 12-N force...
- physics - A 10-KG block is pulled along a rough horizontal floor by a 12-N force...
- physics - find the average of a block being propelled propelled by an elastic ...
- Physics - A 2.0 kg block of iron slides along a floor, decreasing its speed from...
- PHYSICS PLEASE HELP!!! - Please someone have mercy this is a test grade and I ...
- physics - A 3.24 kg block located on a horizontal frictionless floor is pulled ...
- physics - A 3.0 kg block is pushed along a horizontal floor by a force F of ...
- AP Physics C - A 4.10 kg block is pushed along a floor by a constant applied ...

More Related Questions