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PhysicsVectorsAddition/SubtractionEasy2 minPYQ_2019
PhysicsEasysingle choice

The position co-ordinates of a particle moving in a3Dcoordinate system is given by

x=acosωt

y=asinωt

andz=aωt

The speed of the particle is:

Options:

Answer:
A
Solution:

x=acosωt

y=asinωt

z=a ωt

vx=-aωsinωt

vy=aωcosωt

v2=aω

v=vx2+vy2+vz2

=-aωsinωt2+aωcosωt2+aω2

=aω2

Stream:JEESubject:PhysicsTopic:VectorsSubtopic:Addition/Subtraction
2mℹ️ Source: PYQ_2019

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