Question

design the superelevation for a horizontal curve of
400m radius and design speed of 120km/h. Assuming maximum elevation
of 7% and friction 0.15.

comments your answer

Answer #1

A developer is having a single-lane raceway constructed with a
180 km/h design speed. A curve on the raceway has a radius of 320
m, a central angle (D) of 30 degrees, and PI stationing at
11+511.200. If the design coefficient of side friction is 0.20,
determine the superelevation required at the design speed? Make
sure you use the exact equation for R and not the approximate
equation for R. Include a discussion (a short paragraph) of why
this important....

A curve of radius 68 m is banked for a designed speed of 85km/h.
If the coefficient of static friction is 0.30, at what range of
speeds can a car safely make the curve? (You must show schematic
and free-body diagrams, and apply Newton's 2nd law of motion.)

An automobile moves on a level horizontal road in a circular
path of radius 30.5m. The coefficients of friction between the
tires and the road are Ps = 0.50 and Pk = 0.1, respectively. The
maximum speed with which this car can round this curve is?

4) Consider a car traveling with speed around a curve of
radius r . a) Derive an equation that best expresses the angle ()
at which a road should be banked so that no friction is required.
b) If the speed signpost says 42 mile/h, and the angle of the bank
is 18°, what is the radius (r) of the curve. (2 points)
You must show how tan is derived mathematically.

A car rounds a 50 meter radius curve that is banked such that a
car rounding it does not need friction at a speed of 12 m/s. What
is the bank angle of the road?
The coefficient of kinetic friction between the tires and the
road is 0.5 and the coefficient of static friction between the
tires and the road is 0.8. If the same road were flat (instead of
banked), determine the maximum speed with which the coar could...

A curve at a racetrack has a radius of 600 m and is banked at an
angle of 7.0 degrees. On a rainy day, the coefficient of friction
between the cars' tires and the track is 0.50. Part A. What is the
maximum speed at which a car could go around this curve without
slipping? Give answer as vmax= and m/s

A 1000-kg car is traveling around a curve having a radius of 100
m that is banked at an angle of 15.0°. If 30m/s is the maximum
speed this car can make the curve without sliding, what is the
coefficient of friction between the road and the tires?

A curve of radius 20 m is banked so that a 1100 kg car traveling
at 30 km/h can round it even if the road is so icy that the
coefficient of static friction is approximately zero. The
acceleration of gravity is 9.81 m/s 2 .
Find the minimum speed at which a car can travel around this
curve without skidding if the coefficient of static friction
between the road and the tires is 0.3. Answer in units of m/s.

If a car takes a banked curve at less than the ideal speed,
friction is needed to keep it from sliding toward the inside of the
curve (a real problem on icy mountain roads).
(a) Calculate the ideal speed to take a 125-m radius curve
banked at 14.0°.
Did you draw a free body diagram and label all forces acting on a
vehicle? km/h
(b) What is the minimum coefficient of friction needed for a
frightened driver to take the...

An engineer wants to design a circular racetrack of radius R
such that cars of mass M can go around the track at speed U without
the aid of friction or other forces other than the perpendicular
contact force from the track surface.
Find an expression for the required banking angle θ of the
track, measured from the horizontal. Express the answer in terms of
M, R, U, and g.
Suppose the race cars actually round the track at a...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 3 minutes ago

asked 5 minutes ago

asked 5 minutes ago

asked 7 minutes ago

asked 7 minutes ago

asked 7 minutes ago

asked 8 minutes ago

asked 8 minutes ago

asked 10 minutes ago

asked 10 minutes ago

asked 12 minutes ago