Case
angular motion in cars
- Course
- PHY 103 (PHYSICS)
- Institution
- Camden County College
a write up of an assignment
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Angular motion in carsQuestions Analysis:
1. Which gear has the highest speed? How does the torque of this gear
compare to that of the other gears? What is the top speed of the car if
the engine cannot exceed 7200 RPM?
6th gear has the highest speed. The torque is the lowest which can lead
to a drag force. The top speed of the car if the engine cannot exceed
7200 RPM is 202.3mph
2. At which gear does the car accelerate the fastest and why?
The 1st gear accelerates the fastest because it has the highest torque.
3. What happens to the time it takes the car to reach 7200 RPM in first
gear if larger radius wheels or tires are put on the car? What is the
reduction in force at the tire in first gear at peak transmission torque if
tire radius is increased from 30 to 38 inches?
Larger radius wheels can reduce the force on the road. At the peak
torque in first gear the reduction went from 3106N to 3934N.
4. How much time will it take the car starting from rest with 30 inch
diameter tires to reach its top speed in sixth gear (assume no air
resistance)?
It would take 29.01 sec to reach its top speed in 6th gear with 30 inch
diameter tires.
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