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The photosphere of the Sun rotates with a 25 day period at equator and more than a 36 day period at the poles. Below the photosphere we have the convection zone and below the convection zone everything rotate as it was one solid spherical body. This spherical body is 70 % of the volume of the Sun and even more of the mass and rotates with a period of 26,3 ...

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The kinetic energy possessed by the weight depends on its mass (given) and its velocity. The rotational kinetic energy of the cylinder depends on its moment of inertia (found from given information) and its angular velocity. But, because of the cable, the angular velocity of the cylinder is related to the linear velocity of the block, through the radius ...

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Anupam has very well answered, I'll just add my modest contribution with a simple example: the inertial frame could be the Earth and the non-inertial frame a car moving in a circle. In that case the centripetal force is the reaction of the tyres on the ground due to their grip, but the most interesting thing about this case is that objects in the car seem to ...

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A centripetal force is not a fundamental force. We call any force a centripetal force if it is acting towards the center of the direction of rotation, perpendicular to the direction of motion. Rotating a rock tied on a string? Centripetal force = tension in the string Satellite orbiting Earth? Centripetal force = gravity Charged object rotating around an ...

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The problem as is stated is somehow ambiguous, but using some simplifications we can manage to get something: if we assume that forces don't change depending of the angle (i.e. there is no "correcting trayectory rocket" that acts depending of its orientation), and that the center of mass is fixed, then you can express net force F' and net torque T' with ...

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Ok.. I hope I understood it. Force of gravity is uniformly acting on the rolling body at every point of the body while it is rolling down. Suppose we push a rigid box on a surface then our force is acting on every point of it. The friction force will be opposite of its acceleration. Now for a rolling body it will depend on how we are moving the body. We can ...

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First of all friction force is applied by the surface of the plane where the object is moving. when we walk on a surface we push the surface backwards as a result due to friction the surface push us which is the frictional force. It is in the direction we are walking. Now an object which is rolling with acceleration is rolling with increasing velocity. It ...

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Electrons are leptons and are not composite particles and are therefore treated as point particles, aside from current experiments that are looking for electron dipole moments. When quantum mechanical spin was discovered various models tried to explain it via our standard notions of orbital angular momentum by having the electron rotate but it doesn't work.

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Rotation and Translation The distinction is crucial for understanding Newton’s mechanics. In broad terms, translation indicates motion in a straight line; and rotation indicates motion around an axis. When Newton muses in Principia that maybe there is no such thing as a body truly at rest, he is also implying that maybe there is no such thing as motion in ...

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There are a couple of problems with this. One is that $$\tau_{net}=I\alpha$$ is an equation that relates net torque to angular acceleration, but $T$ shown in the figure is a force (tension), not a torque. So use the definition of torque to convert $T$ into torque due to the tension ($\tau_{T}$). Also, the relationship between the linear acceleration $a_{cm}$ ...

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This is the same idea as the direction of rotation of a ceiling fan or a box fan. Motor fans work by pulling air in from one direction, and pushing it out the other direction. Which side is the "in" side, and which is the "out" side, is determined by the direction of rotation of the blades and by the direction of the pitch of the blades. Most fans have their ...

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