Question

1) A Red Car and a Blue Truck are driving down a winding road. Through the first curve in the road, the Red Car is driving twice as fast as the Blue Truck. The second curve is half the radius of the first, which causes the Red Car to slow down to half the speed of the Blue Truck to drive around the curve. Rank the acceleration each vehicle experiences in each curve from largest to smallest.

-blue truck in first curve

-red car in first curve

-red car in second curve

-blue truck in second curve

2) A ball is being swung in a vertical circle by a string. When at the bottom of its circular path, the net centripetal force acting on the ball can be calculated by..

3) Two asteroids in space that are near each other experience a force of 5,265 N due to the gravitational force between them. If their positioning was changed so that they were spaced 0.5 times their original distance apart, what would the new force of attraction between them be?

4) A car drives around a curve with a centripetal acceleration of 9.2 m/s². If the car is driving at 24 m/s, what is the radius of the curve?

5) A 0.42 m long string with a 0.32-kg ball attached to the end is being used to swing the ball in a circle at a constant speed. If the tension in the string is 5 N, what is the speed of the ball?

6) A Ferris wheel at a carnival has a radius of 31 m and turns so that the speed of the riders is 5.4 m/s. What is the magnitude of the centripetal acceleration that the riders experience?

Answer #1

6.1.2.3
a, A curve in a road forms part of a horizontal circle. As a car
goes around it at constant speed 14.0 m/s, the horizontal total
force on the driver has magnitude 133 N. What is the total
horizontal force on the driver if the speed on the same curve is
17.9 m/s instead?
magnitude
N
direction
---Select--- inward
outward
b. A space station, in the form of a wheel 101 m in diameter,
rotates to provide an "artificial...

The friction between the tires of a car and a flat road provides
the centripetal force for a
turn. For a 1800 kg car travelling at 25 m/s on a curve of radius
100 m:
a. Calculate the normal force on the car from the road.
b. Calculate the centripetal force required to turn the car
safely.
c. Calculate the minimum coefficient of static friction between the
tires and road for the car
to turn safely.
d. Ice on the...

1) You are making a circular turn in your car on a horizontal
road when you hit a big patch of ice, causing the force of friction
between the tires and the road to become zero. While the car is on
the ice, itA) moves along a straight-line path away from the center of the
circle.B) moves along a straight-line path toward the center of the
circle.C) moves along a straight-line path in its original
direction.D) continues to follow a...

A car goes around a curve of radius r at a constant speed v.
Then it goes around another curve of radius 3r at speed the same
speed. What is the centripetal acceleration on the car as it goes
around the second curve, compared to the first?

A race-car driver is driving her car at a record-breaking speed
of 225 km/h. The first turn on the course is banked at 15, and the
car’s mass is 1450 kg.
find :
a) Calculate the radius
of curvature for this turn.
b) Calculate the
centripetal acceleration of the car.
c) If the car
maintains a circular track around the curve (does not move up or
down the bank), what is the magnitude of the force of static
friction?...

Arrange the listed objects according to their angular speeds,
from largest to smallest.
a tire of radius 0.401 m rotating at 12.2 rpm
a bowling ball of radius 12.4 cm rotating at 0.456 rad/s
a top with a diameter of 6.84 cm spinning at 18.7∘ per
second
a rock on a string being swung in a circle of radius 0.587 m
with a centripetal acceleration of 4.53 m/s2
a square, with sides 0.123 m long, rotating about its center
with...

While driving down the street, your friend’s car was hit by a
truck from behind. The mass of your friend’s car is 1500
kg while the truck is 1800kg. Your friend was driving 25
mph or 11.2 m/s. Assume that collision causes both cars to stick
together and they do not supply additional power to the wheels
after the collision. After the collision, the two cars slide to a
stop. The coefficient of kinetic friction is 0.65 for the car and
truck...

A BMW is going around a banked curve in the road. It is part of
a circle with radius 125 m . An automobile that goes around the
curve with speed 20 m/s does not require any friction force to not
slip, but this BMW is going around the curve at 38.8 m/s. What's
the smallest value the coefficient of friction (between the tires
of the BMW and the road) that can be without any slipping?
Answer= .64 **But, How?**

3-A 1.0 kg block slides down an inclined plane of 39
0 from the horizontal. If the
block starts from rest and hits the bottom in 5.1 s,
what is the speed of the block, in the unit m/s, at the bottom of
the incline? Assume a frictionless plane.
4-A bus negotiates a turn of radius 103 m while traveling at a
speed of 92 km/h. If slipping just begins at this speed, what is
the coefficient of static friction between the...

1)
A driver knows she is driving counterclockwise on a circular road.
She looks down at her speedometer, and notices its reading is not
changing with time. she has taken physics so she knows she is
accelerstion in what direction ( ignorning any motion of the
earth?)
2) you swing a rock, tied to a thread of length L in a
horizontal circle around your head at a given constant angular
frequency omega. since there is gravity the thread slopes...

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