help mr with physics problems?
Mar 09, 2010
in
Tornado Questions
A frantic weather reporter is reporting on a live tornado. The reporter exclaims, “Wood, metal, and all kinds of debris are being thrown directly outward from the edge of the funnel.” In light of your understanding of circular motion, comment on the accuracy of the reporter’s statement.
The tire on your car is almost flat and, therefore, a large portion of the tire’s surface is in contact with the street. When you pump it up, less of the tire’s surface is in contact with the street. Explain why a change in tire pressure changes the amount of tire surface in contact with the street.
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4 comments
James P on March 9, 2010 at 7:00 am
I’ll give you a clue – you fill out the words:
(a) flying off tangentially, not directly outward
(b) pressure x area = downward force on road must equal weight of car on wheel
Frogz on March 9, 2010 at 7:00 am
it gets bigger(and rounder) the sides get lifted up as it gets rounder so only a smaller part on the bottom comes in contact with the road
CaviSS146 on March 9, 2010 at 7:00 am
outward and up
pressure in the tire keep the weight of the car for pushing it down so much forms a better circle
Basra on March 9, 2010 at 7:00 am
1st is to do with centrifugal forces
as something is spun, it is thrown outwards from its axis
2nd as the tyre inflates, air pressure in the tyre pushes outwards in all directions causing the car to rise. the increase in tyre pressure eventually counteracts the weight of the car, restoring the tyre to its natural shape, which reduces the area of tyre in contact with the road