- #1

princejan7

- 93

- 0

## Homework Statement

A jet is coming out of a dive and a sensor in the pilots seat measures a force of 800lb for a pilot whose weight is 180lb. If the jet's instruments indicate that the plane is traveling at 850mph, determine the radius of curvature, p, of the plane's path at this instant

## Homework Equations

a= (dv/dt)at + ((v^2)/p)an

## The Attempt at a Solution

So I think this involves the component of acceleration in the direction perpendicular to the

flights path at that point?

so an=(v^2)/p

But I don't know what an is at that point?Also, for what kind of problems should the polar coordinate system be used over the normal-tangential co-ordinate system?

## Homework Statement

http://postimg.org/image/45lhhjrqp/

## Homework Equations

same as above question

## The Attempt at a Solution

So at B, I think I can find the component of acceleration perpendicular to the path(which will point towards the center in this case?) using (v^2)/p and then use that to find the resultant force in the same direction using RFn=m(an)

But I don't know what to do next. Is that enough information to solve simultaneously for both the unknown forces?