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"Motion and Design" Motion and Force PPT Courseware
Why are car bearings designed as ball bearings?
The car bearings are replaced with ball bearings. The rolling friction is smaller than the sliding friction, thus reducing the friction.
Observe these two pictures and tell us what you think:
When we walk or drive in a car, if the friction is too small and the vehicle will slip, the friction is beneficial.
When the machine is running, the parts rub against each other and wear, and the friction here is harmful.
When a child rides a scooter, the friction hinders the scooter's progress. The friction here is harmful.
In order to move better, people have made careful designs when manufacturing related items.
When people need friction, they find ways to increase it; when people don't need friction, they find ways to reduce it.
Look for it: great design on bikes!
What parts of a bicycle are closely related to sports?
Front and rear wheels, small gears on the rear axle, chain, large sprocket on the bottom bracket, pedals, brakes, etc.
The most closely related part of the bicycle to sports
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"Motion and Design" Motion and Force PPT download:
"Motion and Design" Motion and Force PPT Download Part One: Scenario Introduction Why is the car designed like this? A car generally consists of an engine, chassis, body and electrical equipment. What is the relationship between movement and design? ... ... ... Sports and Design PP..
"Motion and Design" Motion and Force PPT:
"Motion and Design" Motion and Force PPT Part 1: The Benefits and Harms of Friction When is friction harmful to us? At what point does it benefit us? When we walk or drive in a car, the friction is too small and the vehicle will slip. At this time, the friction is beneficial. friction..
"Motion and Design" Motion and Force PPT Courseware 3:
"Motion and Design" Motion and Force PPT Courseware 3 Where is friction beneficial? 1. When people walk and cars drive, the friction at this time is beneficial to people and cars. 2. When a person stands on a scooter, the friction between the shoes and the scooter is beneficial. 3. Auto...