A new rear-wheel drive automobile design is being tested and you have been asked to estimate its performance. The car without wheels (i.e., the body) has a mass of mc = 1350 kg. The wheels (including tires) have diameter of 65.0 cm and each wheel weighs mw = 16.0 kg. The radius of gyration of the wheels about their centers is k = 21.7 cm. Model the torque output (which acts in the counterclockwise direction) to each rear wheel as T(t) = 80.0 t3/2 N. m. Assume that the wheels roll without slipping and neglect the air resistance and any other frictional effects.(Figure 1) %3D

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Part A - Time for the Car to Reach 100 km/h
Find the time it will take for the car to reach v = 100 km/h from rest.
Express your answer to three significant figures in seconds.
• View Available Hint(s)
vec
?
t
S
After the car reaches 100 km/h the driver immediately steps on the brakes and comes to a
stop in 2.55 s. The brakes are at a distance 14.9 cm from the center of the wheel and the
force they apply acts in the y direction. Assume for this problem that the brakes apply an equal
force to each wheel, that the torque to the rear wheels is zero and that the wheels continue to
rotate until the car stops. Calculate the magnitude of the force, F, exerted by the brakes on
each wheel during this time.
Express your answer to three significant figures and include the appropriate units.
• View Available Hint(s)
HẢ
?
F, =
Value
Units
Transcribed Image Text:Part A - Time for the Car to Reach 100 km/h Find the time it will take for the car to reach v = 100 km/h from rest. Express your answer to three significant figures in seconds. • View Available Hint(s) vec ? t S After the car reaches 100 km/h the driver immediately steps on the brakes and comes to a stop in 2.55 s. The brakes are at a distance 14.9 cm from the center of the wheel and the force they apply acts in the y direction. Assume for this problem that the brakes apply an equal force to each wheel, that the torque to the rear wheels is zero and that the wheels continue to rotate until the car stops. Calculate the magnitude of the force, F, exerted by the brakes on each wheel during this time. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HẢ ? F, = Value Units
A new rear-wheel drive automobile design is being tested and
you have been asked to estimate its performance. The car
without wheels (i.e., the body) has a mass of
m. = 1350 kg. The wheels (including tires) have diameter
of 65.0 cm and each wheel weighs mw = 16.0 kg. The
radius of gyration of the wheels about their centers is
k = 21.7 cm. Model the torque output (which acts in the
counterclockwise direction) to each rear wheel as
T(t) = 80.0 t3/2 N. m. Assume that the wheels roll
without slipping and neglect the air resistance and any other
frictional effects.(Figure 1)
Figure
1 of 1
1 >
B
Transcribed Image Text:A new rear-wheel drive automobile design is being tested and you have been asked to estimate its performance. The car without wheels (i.e., the body) has a mass of m. = 1350 kg. The wheels (including tires) have diameter of 65.0 cm and each wheel weighs mw = 16.0 kg. The radius of gyration of the wheels about their centers is k = 21.7 cm. Model the torque output (which acts in the counterclockwise direction) to each rear wheel as T(t) = 80.0 t3/2 N. m. Assume that the wheels roll without slipping and neglect the air resistance and any other frictional effects.(Figure 1) Figure 1 of 1 1 > B
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