Recent content by johnnnnyyy

So I am a little confused about how to calculate the error uncertainty of a slope. Let's say I have data points (1,2), (2,2.75), (3,3.75), (4,4.7), (5,5.5) which when put in excel gives me a slope of .895. Let's say the error uncertainty for every point is +/-0.1. What I used to do is subtract...

So I have a series of 5 data points let's say that they are (1,1),(2,3),(3,4),(4,4.5),(5,4.75) that create a power function that has the equation y=1.2x^.97. Let's also say that the error uncertainty for every number is 0.1. I know that for a linear line you can take the uncertainty of the...

What causes an object to tip over instead of slide when a sufficient force is applied to an object? If you apply a force of 7N to an object that requires a force of 6N to tip it over and a force of 3N for it to slide it will always tip over. As long as the force applied is more than the force...

Homework Statement What would be the error uncertainty when you take ln of a number. For example ln(10) and the error uncertainty for 10 is ± 1 Homework Equations The Attempt at a Solution Is the error uncertainty just (1/10)*2.3? (2.3 is the answer to ln(10))

That's what I can't figure out, I found the force of static friction, the force of kinetic friction, the deceleration of the block, the initial velocity but I can't figure out the force of the strike. How would you go about solving this?

If someone wanted going to push a static object a certain amount of distance how would you calculate the force the person needs to apply to the object? I know you have to take the static force of friction into account so let's say the force of static friction is 10N to get the object moving, I...

Using V^2=u^2+2as, I know that V will be 0, a will be 2.94 and s is the distance which am trying to find, I just don't know how to find u.

I know that I need to use kinetic friction but I don't how to use it with what I am giving. I think I might need to find velocity but how could I find that?

Homework Statement A block of mass 1kg has a coefficient of static friction of .5. If a 7N force is applied to the block what distance can the block travel? Coefficient of kinetic friction is .3 Homework Equations F=ma The Attempt at a Solution I found the static frictional force...

Couldn't you measure it as a force though? For example if you strike the block near the bottom so that it will slide and you measure the distance the block slides and you know the coefficients of friction couldn't you measure the force applied to the block from the strike?

Homework Statement A refrigerator has a vertical center of mass .5m above the floor, and a horizontal center of mass of .5m which is in the horizontal center, the mass of the fridge is 200kg. What is the maximum initial horizontal force a machine can apply to the fridge which is at rest for...

If it takes 30N to tip over a block based on the equation F=mgL/2r but you strike the stationary block with a force of 50N what is the equation for the force of the block as it is tipping? I know that there will be an Fnet force of 20N but wouldn't a force of gravity or something give the...

I was planning on putting something on the end of the pendulum and raising it to a certain point every time and letting it hit the block at the bottom.

Would a spring work better than a pendulum?

What is a contraption I can make at home somewhat easily to apply a constant force to a block? I am doing an experiment on how far the block will slide. I was thinking about making some sort of pendulum but would love to hear some of yours guys ideas. Thanks