# curve

1. ### Force on object moving on a curve

I'm not sure how to approach this problem. We never went over problems like this in class.
2. ### Help: Calculate a sphere from base curve

Contact lenses are generally defined by their power, base curve, and diameter. Does anyone know how to calculate the sphere based on a base curve of 9? Thanks for the help.
3. ### forces on submerged curve surface

i dont understand the statement 1 and 2 , can someone help to explain ? for 1 , does the author mean Fh= Fv ?? for 2 , does the author mean Fv = Fh + W ? but in statement 1 , Fh already = Fv
4. ### Banked curve problem

Hi. I have come to an impasse in a problem I've been attempting to solve and I'm afraid I need a hint as to where I go from here. I have been going round and round and can't seem to get any further along with my attempts. I would appreciate a little help especially in what my next step would be...
5. ### How do I integrate this problem?

Find the length of the curve given by the parameterization x(t)=t^4-2t^2+1 y(t)=t^2-1 on the interval 0≤t≤1 I'm stuck on the integrating the function after I put it in the curve length formula of sqrt((dx/dt)^2+(dy/dt)^2). Can anyone help?
6. ### Curve showing the dependence of instantaneous speed upon time

i have 5 exercises in my homework and i've done the rest except for this one. i don't understand the question (Crying)
7. ### Work done - area under a curve: weight?

Hi, Given a graph of force verse displacement of an object on a frictionless horizontal surface, does the mass of the object play a part in the formula for work or is it simply force*displacement of the area under the curve? Thanks Splint

what does this equation stand for? y=acosθ(4sin²θ-1)(Headbang)
9. ### Potential energy separation curve

Here's my understanding of the Force /Separation graph, I'm open to criticism/ridicule if I've got it wrong: If the two atoms are pushed together, then there is a repulsive force between them of a positive magnitude. If they are separated by a distance r, then the two forces...
10. ### What angle should the banked curve be?

Question: "A civil engineer wishes to redesign a curved roadway in such a way that the car will not have to rely on friction to round the curve without skidding. In other words, a car moving at the designated speed can negotiate the curve even when it is covered completely with ice! Suppose the...
11. ### banked curve with friction, looking for velocity

a car is traveling around a banked curve with friction. how fast can the car go around the curve? given: theta = 18.0 = theta coefficient of static friction = .90 = u mass of car = 226 kg = m radius of turn = 50.0m = r assuming U is up, D is down, L is left, R is right, slope rises from left...
12. ### Bank curve !! Really urgent

A curve of radius 150m is banked at an angle 10 degree. An 800kg car negotiates the curve at 85 km/h without skidding. Find the normal force on the tires exerted by the pavement. There is friction between the surface and the car. It involves friction here so it's more complicated. Can anyone...