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Answered 2014-09-25 14:48:17

If an object moves in a circular path it goes faster when the radius gets smaller according to the equation of circular motion F=mv^2 /r

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What is the direction of the force that's keeps and object moving in a circle?

The direction of the force that keeps an object moving in a circle is tangential perpendicular to the the radius.



Why does centripetal acceleration occur?

The velocity of an object moving at a constant speed but in a circular motion due to a centripetal force is constantly changing direction (because velocity is a vector with magnitude and direction), and so since the motion of an object moving in a circle is at a tangent to the circle, this object is defined as constantly accelerating towards the centre of the circle. NB: this is at a constant speed (scalar) and with a constant radius of circle of motion


Does the radius affect the area of a circle?

Yes the radius does affect the area of a circle. In fact to find the area of a circle people need to know the radius. The radius is half way between the middle of a circle to any of it's edges. The formula for the area of a circle ispi*radius squaredYou must first find the square of the radius and multiply it by pi(3.14.) For more help go to Wikipedia.com and type circle.



What is the radius of a 20 cm circle with a quarter cut out?

10 cm Cutting out a quarter of the circle doesn't affect the radius, which is half of the diameter.


Calculate surface area of round flat object?

A flat round object is a circle. Surface area of a circle = pi*radius squared.


The centripetal force of a body having mass m and rotating at a linear speed of v in a circle of radius r is given by mvr mvr mv2r mvr2?

none of the above Force centripetal = (mass * velocity^2) ÷ radius More mass , more force needed to keep object in the circle Object going faster, more force needed to keep object in the circle Larger radius, less force needed to keep object in the circle That is why mass and velocity are in the numerator ( multipliers) and Radius is in the denominator ( divider)


When you observe an object moving in a circle what can you infer about the net force acting on it?

The net force is directed toward the center of the circular path that the object is moving along, and it has a magnitude equal to the velocity squared times mass divided by the radius of the path. (mv^2/r)


What causes circular motion?

Circular motion is due to the direction of a body/particle/object perpendicular to a radius of the circle drawn to the point of location of the object on the circle.


What is the difference between surface area and radius?

surface area is the area of a 3D object radius is half of the diameter of a circle


What is the tangential speed of an object moving in a circle with a radius of 5 that is going around 3 times in 4 seconds?

I suggest you calculate the total distance travelled (use the formula for the circumference of a circle), then divide this result by the time to get the speed.


If the radius of a circle is six inches then the diameter is how many feet?

The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.


What is radius squared?

It is the numerical value of the radius - usually of a circular shape - multiplied by itself. It has no particular significance in itself and is a proportion of the surface area of the object. What proportion of the area depends on whether the object is a circle or sphere.That is the same as radius x radius.



Is 1.7 the radius of a circle?

1.7 is a fine number. It can be the radius of a circle.Any number can be the radius of a circle.


What is the radius of the circle equal to?

Radius of a circle= Perimeter of the circle/2*pi Radius is half the diameter Radius is the length of a straight line from the center point of the circle to the edge of the circle.


If the radius of a circle is r what is the diameter of the circle?

The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.


If the radius of a circle is 2cm what is the diameter?

Diameter of circle = 2 * Radius of the circle.


What is the equation for the radius of a circle?

The radius of a circle = the diameter of the circle divided by 2



Is the radius of a circle half of a diameter?

no.the radius of a circle is the distance from the middle of the circle to the edges. no.the radius of a circle is the distance from the middle of the circle to the edges.


What is there radius of a circle?

The radius of a circle is the distance from the centre of the circle to its circumference - which is the outer limit of the circle.


Can the unit circle have a radius of 2 unit?

If the radius is two. it won't be a unit circle, a unit circle is defined as a circle with radius one.


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