Rotation

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)

No, centripetal force is not acting when a body is moving in a straight line. Centripetal force is required to keep an object moving in a curved path.

Yes, suppose a body is rotating anti-clockwise, then its angular velocity and angular momentum, at any moment are along axis of rotation in upward direction. And when body is rotating clockwise, its angular velocity and angular momentum are along axis of rotation in downward direction. This is regardless of the fact whether angular velocity of the body is increasing or decreasing.

No, acceleration is not uniform in uniformly circular motion. In uniformly circular motion, the direction of the velocity vector is constantly changing, which means there is always a centripetal acceleration acting towards the center of the circle. This centripetal acceleration is not constant in magnitude, making the overall acceleration not uniform.

The stiffness of a system affects how it resists deformation when a force is applied. As angular velocity increases, the deformation of a system may change due to the increased speed at which the system is rotating. In some cases, an increase in angular velocity may lead to a decrease in stiffness as the system experiences greater deformation.

Centrifugal force can be a problem when taking sharp turns at high speeds, as it can cause the vehicle to lose traction and potentially skid off the road. This force is experienced when a vehicle is turning, pushing it outward from the center of the turn, which can lead to instability if not managed properly. It's important to adjust speed, brake before entering the turn, and steer smoothly to counteract centrifugal force.

Rotation motion occurs when an object spins around an axis, causing it to move in a circular path. This type of motion is commonly observed in objects such as wheels, planets, and rotating machinery. Rotation motion can be described in terms of angular velocity, which measures the rate of rotation.

Not exactly,torque is the force that affects rotational motion; the greater the torque, the greater the change in rotational motion. It is always specified with regard to the axis of rotation.

The angular velocity of the hour hand is 0.5 degrees per minute, because the hour hand completes a full rotation of 360 degrees in 12 hours.

Because after much investigation, experiment, and experience, in laboratories

of Physics all over the world, it has been determined that there is more inertia

where there is more mass, and less inertia where there is less mass. Moreover,

through careful measurement, it has been possible to quantify the relationship,

and to demonstrate, analytically and conclusively, that intertia is precisely and

directly proportional to mass, and that where there is no mass, inertia is zero.

Be that as it may, and when all is said and done, it became clear that mass is

like unto no other quantity as a worthy and proper surrogate for inertia.

The source of the centripetal force that keeps the child moving in a circle is tension in the rope or the father's grip. This force is directed towards the center of the circular motion and prevents the child from flying off tangentially. Gravity and weight also play a role in the overall forces acting on the child but are not the direct source of the centripetal force in this scenario.

In a closed system where no external torque acts, the angular momentum remains constant (law of conservation of angular momentum). If external torques are present, the angular momentum of the system can change due to the torque causing rotation.

The energy that the object has when it's spinning is never "used up", unless

there's something acting on the object to rob energy from it. In our daily

experience on Earth, there's ALWAYS some friction acting on a spinning object.

The friction robs energy from it, and it eventually stops spinning. That's why

it's so hard for us to understand and accept Newton's law that tells us how

things REALLY work. An object in motion continues in motion unless it's acted

on by an external force. In other words, if something is moving, it doesn't take

any force or action to KEEP it moving. We just never see this happen on Earth,

because we can never set anything up WITHOUT any outside forces that act

to make it stop, so we always have to do something to keep it moving.

A centripetal force acts towards the center of the circle, continually changing the object's direction towards the center. This force prevents the object from moving in a straight line and keeps it moving in a circular path.

No, a body in translatory motion does not have angular momentum as angular momentum is associated with rotational motion. Translatory motion involves motion along a straight line, while angular momentum involves rotation around an axis.

The formula for centripetal acceleration is a = v^2 / r, where a is the centripetal acceleration, v is the velocity of the object, and r is the radius of the circular path. The force required to produce this acceleration is given by F = m * a, where F is the centripetal force, m is the mass of the object, and a is the centripetal acceleration.

Centrifugal force is not a real force, but rather an apparent outward force that arises in a rotating reference frame. It is a result of inertia and is experienced by objects moving in a circular path due to their inertia trying to move in a straight line, away from the center of rotation.

Angular acceleration is typically expressed in units of radians per second squared (rad/s^2).

Yes, the blade of a fan that is turned on does have angular momentum because it is rotating around an axis. The angular momentum depends on the rotational speed of the blade and its moment of inertia.

Force is used to create movement in the human body, such as when muscles contract to move a limb. Torque, on the other hand, refers to the rotational force created when a force is applied at a distance from a pivot point, such as when throwing a ball or lifting a weight. Both force and torque are essential for various movements and functions in the human body.

Angular acceleration is equal to zero when an object is rotating at a constant angular velocity without any change in its rotational speed. This occurs when the net torque acting on the object is zero, meaning that there are no external forces causing the object to accelerate or decelerate rotationally.