Remember that velocity is a vector, with both a magnitude and a direction. If the direction changes, then there is acceleration.x86 said:No clue to be honest, the velocity shouldn't change, because of the acceleration. And we don't know the radius, so I'm not sure how to solve this at all
tms said:Remember that velocity is a vector, with both a magnitude and a direction. If the direction changes, then there is acceleration.
That is the angular speed. You also have the translational speed. Find a relation between those two quantities (that will give you [itex]r[/itex]).x86 said:Right, the only thing i can see is 40 degrees / 1.75 seconds.
An object in uniform circular motion is always changing direction.Okay, so the acceleration has to be 3 m/s^2 every time it changes direction...
tms said:That is the angular speed. You also have the translational speed. Find a relation between those two quantities (that will give you [itex]r[/itex]).
An object in uniform circular motion is always changing direction.
Change in velocity is just the definition of acceleration. It does sound a bit like a trick question, asking for the same thing twice using different words.x86 said:But, what do they mean by change in velocity?
You're welcome.Thank you for those tips by the way, they helped me solve the problem. I totally forgot about period and such
Rotational motion is the movement of an object around an axis or center point. It can also be described as the spinning or turning of an object.
Angular velocity is a measure of the rate at which an object rotates or spins around an axis, while linear velocity is a measure of the rate at which an object moves in a straight line. Angular velocity is typically measured in radians per second, while linear velocity is measured in meters per second.
Angular acceleration is the rate of change of angular velocity, while linear acceleration is the rate of change of linear velocity. In other words, angular acceleration measures how quickly an object's rotational speed is changing, while linear acceleration measures how quickly its linear speed is changing.
The moment of inertia is a measure of an object's resistance to changes in its rotational motion. It depends on the mass distribution of the object and the axis of rotation. The formula for calculating moment of inertia is I = mr², where m is the mass of the object and r is the distance from the axis of rotation to the mass.
Torque is a measure of the force that causes an object to rotate. It is calculated by multiplying the force applied to an object by the distance from the pivot point to the point where the force is applied. The SI unit for torque is Newton-meters (Nm).