In what direction should a force be applied to produce maximum torque?
In a perpendicular direction to the rotating body.
A fan spins in the air and air is pushed forward What is the object and reaction force?
The object is the fan and the reaction force is the air being pushed forward by the fan blades as they spin.
Is the total angular momentum conserved when there is a two car collision?
In a two-car collision, the total angular momentum is conserved only if no external torque is acting on the system. If there is no net external torque exerted on the cars during the collision, the total angular momentum before the collision will be equal to the total angular momentum after the collision.
What is ment by angular momentum and angular velocity?
Angular velocity means how fast something rotates. The exact definition of angular momentum is a bit more complicated, but it is the rotational equivalent of linear momentum. It is the product of moment of inertia and angular speed.
How do solve conservation of angular momentum?
Usually you would use some fact you know about the physical system, and then write an equation that states that the total angular momentum "before" = the total angular momentum "after" some event.
In driving What does centrifugal force increase with?
In any circular movement, including driving in a curve, the centripetal force (and the corresponding centrifugal force, which is often considered a "fictitious force") will increase:
* When the speed increases
* When the radius of curvature decreases
How the direction of angular momentum is given by right hand rule?
Angular momentum = r x p... That is position vector r, CROSSED (not multiplied) with momentum vector p. So, to find out the direction the angular momentum will act, take ur right hand, point your fingers in the direction of r, and "curl" (close/bend whatever u wanna call it) ur FINGERS (not thumb) towards p. New, whichever way ur thumb points, that is the direction of the angular momentum
Hope that helped
Can a force produce a torque when there is no lever arm?
no because to get a torque you must multiply lever arm by force. If lever is zero, then torque is zero
What is the dimension of angular velocity?
The dimension of angular velocity is reciprocal time . . . 1/time or T-1 .
It'll be stated as "some angle" per "unit of time", like "45 revolutions per minute",
and angles are dimensionless.
Where is angular momentum found?
Angular momentum is a property of rotating objects and is found in systems where there is rotational motion, such as spinning tops, planets orbiting stars, and moving particles with rotational motion. It is a quantity that describes the rotational inertia and velocity of an object around a specific axis.
What is the relation between torque and angular acceleration?
Torque is the rotational equivalent of force and is responsible for causing rotational motion. Angular acceleration is the rate at which an object's angular velocity changes. The relationship between torque and angular acceleration is defined by Newton's second law for rotation: torque is equal to the moment of inertia of an object multiplied by its angular acceleration.
Yes, rotating generally refers to an object or body moving around a fixed axis or center point in a circular motion. This movement can be described as spinning.
When force acting on tangential to surface what is torque?
When a force is applied tangentially to a surface, the torque produced is called a tangential torque. This torque tends to rotate an object around an axis perpendicular to the direction of the force. The magnitude of the tangential torque is given by the product of the force and the distance from the axis of rotation to the point of application of the force.
How does Rotational Slumping Occur?
Rotational slumping occurs when a mass of soil or rock on a slope rotates along a concave surface, causing the material to move downslope. This movement is usually triggered by factors such as saturation of the material with water, undercutting of the slope base, or seismic activity. The result is a distinctive curved or spoon-shaped landform known as a slump.
Why do loose objects on a dashboard slide right when the car turns left?
This happens because of Newton's First Law. This law states
Every body perseveres in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by force impressed. This means that when an object is moving, it will naturally continue in a straight path until something acts upon it. When you turn left, the object still wants to move in a straight path, so it is not really turning right, it is attempting to continue move in a straight line.
What is the direction of angular momentum?
Angular momentum of a rotating particle is defined as the moment of the linear momentum of the particle about that axis.It is perpendicular to the plane of rotation and parallel to the axis of rotation.
What is Difference between angular velocity and angular speed?
Angular velocity refers to the rate of change of angular displacement with respect to time and has both magnitude and direction. Angular speed, on the other hand, refers to the rate of change of angular displacement with respect to time but does not consider direction and is scalar in nature. In simpler terms, angular velocity includes direction while angular speed does not.
Methods of increasing and decreasing friction?
To increase friction between two surfaces, you can use materials with a high coefficient of friction or roughen the surfaces. This can be achieved by adding texture or applying substances like sandpaper or rubber to increase the grip. To decrease friction, you can use lubricants such as oil or grease to create a slippery layer between the surfaces, allowing them to slide more easily.
Why does work done by centripetal force?
The centripetal force does not do work on an object because it acts perpendicular to the direction of motion. It is responsible for changing the direction of the object's velocity, keeping it moving in a curved path, but it does not change the object's kinetic energy.
When centripetal force exists, obviously there is rotational motion. Right? Centripetal force is the force that is bringing (pointing towards center of the circle path) the object back to the center.
At the same time, centrifugal force is pulling the object, we'll say a ball, away from the center.
This is the force that is felt when you tie a dead baby to a rope and swing in a circular motion.
In conclusion, centripetal and centrifugal are always equal and opposite forces.
Relation between linear velocity and angular velocity?
Linear velocity is directly proportional to the radius at which the object is moving and the angular velocity of the object. The equation that represents this relationship is v = rω, where v is the linear velocity, r is the radius, and ω is the angular velocity. As the angular velocity increases, the linear velocity also increases, given the same radius.
Why is the coriolis force zero at the equator?
The Coriolis effect is zero at the equator because the winds don't have to "bend" due to the shape of the earth and the way the earth rotates. The winds can flow straight.
If you were at the poles where the force is at its maximum, almost every weather system "bends" and "bends strongly" because the earth moves slowest there, and the northern most clouds in those systems move slower than the clouds that are southern most in the system.
Prove that coordinate is cyclic in Lagrangian then it is also cyclic in Hamiltonian?
If a coordinate is cyclic in the Lagrangian, then the corresponding momentum is conserved. In the Hamiltonian formalism, the momentum associated with a cyclic coordinate becomes the generalized coordinate's conjugate momentum, which also remains constant. Therefore, if a coordinate is cyclic in the Lagrangian, it will also be cyclic in the Hamiltonian.
Why work done by centripetal force during half rotation is zero?
The centripetal force always acts perpendicular to the displacement of the object moving in a circular path. Since the work done is the product of force and displacement in the direction of force, and the displacement is perpendicular to the centripetal force, the work done by the centripetal force over a full rotation is zero.
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