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Afina-wow [57]
3 years ago
11

List five situations in which a lesser amount of friction would be beneficial. Overall, would a high or low coefficient of frict

ion be helpful in these situations?
Physics
2 answers:
Natalka [10]3 years ago
6 0
Low coefficient of friction

1. flying a plane (friction between air and plane)
2. ice skating (friction between ice and skate blade)
3. swimming (water & skin)
4. rowing a boat (water and boat)

Pie3 years ago
5 0

Answer:

1).  between parts of machine during Relative motion

2).  Rowing a boat in water

3). moving heavy mass on the surface

4).  Flying of aeroplane

5).  Transfer of liquid through pipe

Explanation:

As we know that friction resist the relative motion of two surface with respect to each other.

So here we require less friction in all above cases as we would like to transfer surface on another surface

Here we know that friction force is given as

F_f = \mu F_n

so here in order to reduce the friction we need to decrease the value of coefficient of friction.

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If the coefficient of static friction between your friend and the car seat is 0.500 and you keep driving at a constant speed of
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Answer:

90m

Explanation:

Let g = 9.8 m/s2. The friction is the product of normal force and its coefficient, and normal force is equal to gravity

F_f = \mu N = \mu mg

The acceleration caused by friction, according to Newton's 2nd law:

a_f = F_f / m = \mu g = 0.5 * 9.8 = 4.9 m/s^2

For the friend to slide over, then the centripetal acceleration must be equal to friction acceleration.

Since you are driving at a constant speed of 21 m/s, then your maximum radius of curvature can be calculated using the following formula:

a_c = a_f = v^2/r = 4.9

r = v^2/4.9 = 21^2/4.9 = 90 m

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3 years ago
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Explanation:

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Answer:

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Explanation:

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