Rotation

Central petal force is the force exerted on the central petal of a wind turbine blade due to aerodynamic loads. It plays a crucial role in the structural design and performance of wind turbine blades, as it affects the overall efficiency and reliability of the turbine. Properly understanding and managing central petal force is essential for optimizing wind turbine operation.

-- If all the forces on a planet were balanced, then the planet would move in

a straight line with constant speed, not in a curved path. So the forces on it

must be unbalanced.

-- That's easy to understand when you consider that there's only one force on

the planet ... the force of gravity that attracts it toward the sun. That force

is a centripetal one.

Actually, centripetal force is the inward force that keeps an object moving in a circular path. It is not a force that we apply to the object, but rather a force that is required to maintain the object's circular motion. Examples of centripetal force include tension in a string for a swinging object or friction for a car going around a curve.

For circular motion, linear speed = angular speed (in radians) x radius. How the radius affects speed depends what assumptions you make about the problem. For example, if you assume the radius increases but the angular speed does not, then of course the linear speed will increase.

The linear speed is directly proportional to the radius of rotation. An increase in radius will result in an increase in linear speed, while a decrease in radius will result in a decrease in linear speed. This relationship is governed by the equation v = ω * r, where v is linear speed, ω is angular velocity, and r is radius.

The fictitious force that appears to push outward on an object in circular motion is called the centrifugal force. It is not a genuine force but rather a perceived effect resulting from the inertia of the object trying to move in a straight line. In reality, the centripetal force, directed towards the center of the circle, is responsible for keeping the object in its circular path.

Without getting into the difference between linear and angular momentum,

it should be enough to simply point out that the Earth's mass is equal to

the mass of something like 60 thousand billion billions of you, and that for

equal momentum, the velocities would be in the inverse of the same ratio.

Angular velocity is a measurement of how fast something is turning.

Everyone has heard of "RPM", which stands for "Revolutions Per Minute" ... how many complete turns an object makes in one minute. That's a perfectly good measurement of angular velocity, although in Physics, angular velocity is normally given in different units.

The standard unit for angular velocity is "radians per second".

Each complete turn covers (2 pi) radians (same as 360 degrees). And there are 60 seconds in one minute.

So if you know the RPM, you can multiply RPM by (2 pi / 60) = 0.10472 to get angular velocity in standard units.

An old LP phonograph record (remember those ?) playing at 33-1/3 RPM has an angular velocity of about 3.5 radians per second.

A car engine idling at 1,000 RPM is turning at about 104.7 radians per second.

In case of Russian dance, the dancer will spin her body about the vertical axis passing through her toe. If she keeps extending her hands then number of rotation and so angular velocity will be less. If she brings her hands close to her body then number of rotations would increase. Same scene could be enjoyed in case of circus with girls hanging just with a tight hold with their teeth.

Yes, a body moving at variable speed can move in a circle if it is subject to a centripetal force that keeps it curved along a circular path. This force is needed to constantly change the body's direction, allowing it to move in a circular motion despite changes in speed.

Centripetal force is not affected by mass. The formula for centripetal force is Fc = (mv^2) / r, where m is mass, v is velocity, and r is the radius of the circular motion. The mass only affects the inertia of the object in circular motion, not the centripetal force required to keep it moving in a circle.

Angular momentum is defined as the moment of linear momentum about an axis. So if the component of linear momentum is along the radius vector then its moment will be zero. So radial component will not contribute to angular momentum

Angular momentum is a property that objects possess when they are rotating around an axis. It is defined as the product of an object's moment of inertia and its angular velocity. It plays a crucial role in various scientific fields, including physics and engineering.

Not at all possible. Torque defined as the moment of the force about a point or an axis of rotation. Torque tau vector = radius vector x Force vector. Radius is to be measured only from a given point or given axis. Hence axis in very important

No, typically a Lab Assistant is not considered a Class 3 post. Lab assistants usually fall under lower classifications such as Class 4 or Class 5. Each organization may have different classification systems, so it's best to check with the specific organization for their classification details.

No, the radius of gyration is not a constant quantity. It depends on the distribution of mass and the shape of the object. It is defined as the root-mean-square distance of the objects' parts from its center of mass.

Angular speed is used in machinery to measure the rate of rotation, while angular displacement measures the change in angle of an object. Angular velocity helps in determining the speed at which an object rotates, and angular momentum is crucial for understanding the rotational motion of objects like spinning tops or planets. Overall, these concepts are important in physics, engineering, and various mechanical systems to analyze and predict rotational behavior.

Artificial gravity is created by simulating the effects of gravity through centrifugal force. Centripetal force is the inward force that keeps an object moving in a circular path. In the context of artificial gravity, centripetal force is what creates the sensation of gravity by pushing objects towards the center of rotation.

The rotating object's moment of inertia.

Similar to Newton's Second Law, commonly quoted as "force = mass x acceleration", there is an equivalent law for rotational movement: "torque = moment of inertia x angular acceleration". The moment of inertia depends on the rotating object's mass and its exact shape - you can even have a different moment of inertia for the same shape, if the axis of rotation is changed. If you use SI units, and radians for angles (and therefore radians/second2 for angular acceleration), no further constants of proportionality are required.

Linear velocity is directly proportional to the radius of the rotating object and the angular velocity. This relationship is described by the equation v = ω * r, where v is the linear velocity, ω is the angular velocity, and r is the radius.

Conservation of angular momentum states that the total angular momentum of a system remains constant in the absence of external torques. This principle is important in understanding the behavior of rotating objects in physics and plays a key role in areas such as orbital motion of planets and stars, gyroscopic stabilization, and the motion of spinning objects. It helps to predict the rotational motion of objects and systems based on initial conditions without the need to consider all the complex forces acting on them.

Assuming that angles are measured in radians, and angular velocity in radians per second (this simplifies formulae):

Radius of rotation is unrelated to angular velocity.

Linear velocity = angular velocity x radius

Centripetal acceleration = velocity squared / radius

Centripetal acceleration = (angular velocity) squared x radius

Centripetal force = mass x acceleration = mass x (angular velocity) squared x radius

The strength of the Coriolis force is influenced by the speed of the object or fluid and the latitude at which it is moving. Faster moving objects and those at higher latitudes will experience a stronger Coriolis force.