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Basically to reduce air friction on a body, the most general idea is to streamline the body. The same is done by the helmet. When one drives a bike , the person takes a position which streamlines the flow of air over the body(i.e, he bends, like in motoGPs). But the head is not so streamlined and it can obstruct the air flow and hence can add additional drag. The helmet is also designed in the same way(take a look at the design of helmet of cyclists), it is streamlined, so that now the air flows smoothly over the head portion, hence reducing the drag.
What else can I help you with?
What are the connective tissue sacs that reduce friction?
Bursae are the connective tissue sacs that reduce friction between tissues such as tendons and bones. They are filled with fluid to lubricate and cushion the joints during movement.
What might parachutists do to speed up their rate of fall?
They would have to reduce friction by becoming perpendicular to the ground and reduce their surface area.
Why are tools and machines coated with greases?
The grease is there to lessen friction between two metal parts. Without grease the moving parts would heat up due to the friction.
What is used to reduce friction between membranes of the heart?
Serous fluid, which acts as a lubricant, helps to reduce friction between the membranes of the heart. This fluid is found in the pericardial cavity between the visceral and parietal layers of the pericardium. The main function of the pericardium and its fluid is to allow the heart to beat efficiently without experiencing excess friction or damage.
How do you raise and lower frictional forces?
You can increase frictional forces by roughening the surfaces in contact, increasing the weight pressing the surfaces together, or using materials with higher coefficients of friction. To decrease frictional forces, you can use lubricants, reduce the weight pressing the surfaces together, or choose materials with lower coefficients of friction.
Cars airplane wings and bike helmets are built in a streamlined shape to reduce what?
Friction.
Do helmets reduce the number of bike accidents in the United States?
No bike helmets don't reduce the number of bike accidents, but they do reduce the serious injuries related to the accidents. Bike helmets save lives.
Do wheels reduce friction?
yes because when they brake the friction is caused to reduce
What kind of friction can help reduce friction?
I never heard of friction reducing friction. You can reduce friction by using lubricants, as well as using wheels (as in ball bearings).
How does oil reduce air friction?
Oil is mainly used to reduce friction between contacting surface, e.g., metal on metal - not to reduce air friction.
What does a bit of oil reduce in science?
Oil is used to reduce friction.
What are the factors that reduce in case of friction?
the factors that reduce in case of friction are the velocity and acceleration.
What is MIPS technology and how does it enhance the safety of helmets?
MIPS technology is a safety feature in helmets that helps reduce the rotational forces on the brain during an impact. It consists of a low-friction layer inside the helmet that allows the head to move slightly upon impact, reducing the risk of brain injury.
What are the ways in which friction is reduce on aeroplane?
by giving it better aerodynamics you can reduce friction. but also the faster it goes the more friction it gets.
How do you reduce the friction and vice versa?
Reduce the friction . . .Apply lubricant to the surfaces in contact, or reduce the mutual pressure.Friction the reduce . . .The phrase has no physical significance.
What material can reduce friction?
Materials that can reduce friction include lubricants such as oil, grease, and wax, as well as low-friction materials like Teflon and graphite. Using smooth surfaces or adding ball bearings can also help reduce friction.
What kinds of substance reduce friction?
Friction is the act of one surface rubbing against another. To reduce friction, use something that offers a small amount of friction. Smoother substances reduce friction. A way to reduce friction is to use something which offers a small amount of friction. For example, you could use something like plastic or glass. Water, most liquids and different types of oil reduce friction. Powder, oil and grease are used in between surfaces to also reduce friction.
