(a) What are the conditions for a particle to perform uniform circular motion about a fixed point? (b) Explain from both the dynamical and work-energy points of view why the speed of such a particle is constant. (c) Is the velocity of this particle constant? How about the acceleration?

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A: (d) The work done by the force on the particle is, W=Fdcosθ

Q: o its just the same answer youre just adding a degree sign

A: Yes , according to laws of reflection angle of incidence is equal to angle of reflection.

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Q: 3. The semicircular plate has a radius of 0.3 m and a mass of 6 kg. Which of the following is the…

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