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erm just want to clarify this.If one were to move in a circular motion,and u complete one revolution thus meaning you come back to the same point to where you started off,is your displacement equals to zero??
Treat "s" as the distance along the circumference measured from the starting point. All the usual kinematic formulas for uniformly accelerated motion apply (assuming the tangential acceleration is constant).SVG84R said:what my tutor did and set me puzzling was that he used kinematic equation:
v^2=u^2+2as,to solve for the linear accleration.Hence s,which is the displacement,turns out to be 2pi*r which is the circumference of the circle.How can this equation be used if we conclude that the displacement is zero for one revolution?
In addition, one of them pointed out that when the particle comes back to the same point in a circular motion,its tangential velocity is pointing in the same direction as it first started off.Now what he claimed was that when one walked in a straight line,in order to move back to where you started off,you have to change direction,hence your velocity must point in the opposite direction.
Assuming the tangential acceleration is constant, the usual kinematic equations apply.SVG84R said:hmm so if we want to find the linear acceleration,we can apply kinematics equation solve for it?
The tangential velocity at any time is just [itex]v_t = r \omega[/itex]; thus the tangential acceleration is [itex]a_t = r \alpha[/itex].is there any other way than using the kinematics equation to solve for the linear accleration?? say can we differentiate the tangential velocity wrt to time to get the linear acceleration??
Displacement is a measure of an object's change in position. When an object has a displacement of zero, it means that its position has not changed from its original starting point.
When displacement equals zero, it means that the object is either at rest or has returned to its original starting point. This can also indicate that the object has not moved at all.
Displacement equal to zero is important because it helps us understand the motion of an object. If an object's displacement is zero, it can help us determine if the object is stationary or if it has returned to its original position.
Displacement and distance are related but different concepts. Displacement is a vector quantity that takes into account an object's change in position, while distance is a scalar quantity that only measures the length of the path traveled. When displacement equals zero, it means the object has not changed its position, while distance equal to zero means the object has not moved at all.
Displacement equal to zero can be calculated by finding the difference between an object's final position and its original position. If the difference is zero, the displacement of the object is also zero.