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If you know the coefficient of friction how do you find the maximum velocity to maintain a circular path at a given radius?
Wiki User
∙ 12y ago
say mass(m) = 10 kg, radius(r) = 10 m, say friction coefficient = 0.5
force to break friction = 10 * 0.5 = 5 kgf = say 50 n
to find acceleration required to produce this force use f=m*a, shuffle to a = f / m
so a = 50 / 10 = 5 (m/s)/s, install in a = v^2 / r, so 5 = v^2 / 10,
so 10 * 5 = v^2, so sq. root 50 = v, so v = 7.07 metres / second
if friction coefficient and radius remain the same, altering the mass wont alter the velocity at breakaway point
Wiki User
∙ 12y ago
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How is friction harmful when driving a car?
Friction slows down a car. As such, in order to maintain the velocity of the car, energy, i.e. gasoline, is required due to friction.If there were no friction, an impossible state, the car would require no energy to maintain its velocity once it had achieved the desired velocity.
Why is it easier to determine the coefficient of kinetic friction if the object moves with a constant velocity?
if moving with constant velocity the only force to slow it down is kinetic friction; if it is accelerating velocity is not constant and an additional force is being applied.
What is the difference between static friction and sliding friction?
Sliding friction is always less than the static friction by small amount.
What is the average value of coefficient of velocity in a submerged orifice?
coefficient of velocity is 0.97 coefficient of discharge is varied from 0.80 to 0.64 coefficient of contraction is 0.64 thanks to me later .do your assignments
Why do automobiles require a push by heavy gear in the beginning of their movement?
According to the law of conservation of momentum, it is the nature of nature to keep objects moving at a constant velocity and in a straight line. That is true even when the speed of the object is zero. The amount of force needed to accelerate an object, which is to increase an object's velocity in the direction of travel, is directly proportional to the mass of the object. F=ma, where F is the resultant of all the forces acting on an object, m is the mass of the object, and a is the rate of acceleration of the object in the direction of the resultant force. Therefore it takes twice as much force to cause a certain rate of acceleration in a two-ton vehicle as it takes to cause the same rate of acceleration in a one-ton vehicle. Once the desired velocity is acheived, no more acceleration is needed; all that is needed to maintain that velocity is enough force to balance the forces of friction and air resistance. So if the vehicle were traveling in space, where there is no friction or air resistance, and if the object stays far enough away from the gravitational influences of large celestial bodies and dark matter, it would maintain the same velocity until the end of time. Another factor at work in this case is the difference between static coefficient of friction and kinetic coefficient of friction. Coefficient of friction is the ratio of the frictional force of two substances sliding against each other to the force holding the substances together. Any two substances, like rubber and rubber or ice and steel, have one static coefficient of friction, which pertains to starting a sliding motion from a standstill, and a kinetic coefficient of friction, which pertains to keeping a sliding object in motion once it is already moving. For a given pair of substances, the static coefficient of friction is always greater than the kinetic coefficient of friction; in other words, it always takes more force to start one object sliding on another than it does to keep it sliding. I know: vehicles don't slide, they roll. However, there is plenty of sliding going on in the engine, transmission, differential and wheel bearings.
What does friction have to do with skydiving?
It determines your terminal velocity, depending on your drag coefficient.
What are the two factors that affect the friction force between two surfaces?
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
How is friction harmful when driving a car?
Friction slows down a car. As such, in order to maintain the velocity of the car, energy, i.e. gasoline, is required due to friction.If there were no friction, an impossible state, the car would require no energy to maintain its velocity once it had achieved the desired velocity.
Why is it easier to determine the coefficient of kinetic friction if the object moves with a constant velocity?
if moving with constant velocity the only force to slow it down is kinetic friction; if it is accelerating velocity is not constant and an additional force is being applied.
What is the difference between static friction and sliding friction?
Sliding friction is always less than the static friction by small amount.
What is the coefficient of friction in a 6 inch round duct with a velocity of 200cfm?
0.32 in. H20 per 100 ft.
What is the average value of coefficient of velocity in a submerged orifice?
coefficient of velocity is 0.97 coefficient of discharge is varied from 0.80 to 0.64 coefficient of contraction is 0.64 thanks to me later .do your assignments
Why achanging velocity cannot maintaining constant speed?
A changing velocity can maintain constant speed if the motion is circular. The constant change in direction is a change in velocity, even if the speed is constant.
Why do automobiles require a push by heavy gear in the beginning of their movement?
According to the law of conservation of momentum, it is the nature of nature to keep objects moving at a constant velocity and in a straight line. That is true even when the speed of the object is zero. The amount of force needed to accelerate an object, which is to increase an object's velocity in the direction of travel, is directly proportional to the mass of the object. F=ma, where F is the resultant of all the forces acting on an object, m is the mass of the object, and a is the rate of acceleration of the object in the direction of the resultant force. Therefore it takes twice as much force to cause a certain rate of acceleration in a two-ton vehicle as it takes to cause the same rate of acceleration in a one-ton vehicle. Once the desired velocity is acheived, no more acceleration is needed; all that is needed to maintain that velocity is enough force to balance the forces of friction and air resistance. So if the vehicle were traveling in space, where there is no friction or air resistance, and if the object stays far enough away from the gravitational influences of large celestial bodies and dark matter, it would maintain the same velocity until the end of time. Another factor at work in this case is the difference between static coefficient of friction and kinetic coefficient of friction. Coefficient of friction is the ratio of the frictional force of two substances sliding against each other to the force holding the substances together. Any two substances, like rubber and rubber or ice and steel, have one static coefficient of friction, which pertains to starting a sliding motion from a standstill, and a kinetic coefficient of friction, which pertains to keeping a sliding object in motion once it is already moving. For a given pair of substances, the static coefficient of friction is always greater than the kinetic coefficient of friction; in other words, it always takes more force to start one object sliding on another than it does to keep it sliding. I know: vehicles don't slide, they roll. However, there is plenty of sliding going on in the engine, transmission, differential and wheel bearings.
What are the factors which affect the coefficient of static friction?
Dry surfacesFor low surface pressures the friction is directly proportional to the pressure between the surfaces. As the pressure rises the friction factor rises slightly. At very high pressure the friction factor then quickly increases to seizingFor low surface pressures the coefficient of friction is independent of surface area.At low velocities the friction is independent of the relative surface velocity. At higher velocities the coefficent of friction decreases.Well lubricated surfacesThe friction resistance is almost independent of the specific pressure between the surfaces.At low pressures the friction varies directly as the relative surface speedAt high pressures the friction is high at low velocities falling as the velocity increases to a minimum at about 0,6m/s. The friction then rises in proportion the velocity 2.The friction is not so dependent of the surface materialsThe friction is related to the temperature which affects the viscosity of the lubricant
Which friction slows down moving bodies kinetic or static?
Friction reduce the velocity, hence, it affect kinetic energy. The potential energy from static pressure is then drawn to maintain the velocity (transformation of potential -> kinetic energy). We then see the friction reduce the static pressure but actually, it affect kinetic first.
What is the coefficient of velocity?
By itself there is none. A coefficient is the multiplying factor in a polynomial equation.
