FARMINGDALE STATE COLLEGE-DR. RONALD PIRICH 6. For a point a. Its angular speed
ID: 2032709 • Letter: F
Question
FARMINGDALE STATE COLLEGE-DR. RONALD PIRICH 6. For a point a. Its angular speed b. Its angular acceleration c. Its centripetal acceleration d. The magnitude of its total acceleration on a spinning disc in uniform circular motion, which of the following is not constant? 7. A figure skater spins with her arms extended, as shown in the encosed tiure large. eo smaill I small, large When she pulls in her arms, she reduces her rotational inertia and spins faster so that her angular momentum is conserved. Compared to her initial rotational kinetic energy, her rotational kinetic energy after she pulls in her arms must be: a. the same b. larger because she is rotating faster c. smaller because her rotational inertia is smaller d. none of the above 8. On a frictionless surface, a sliding box of mass m ollides and sticks to a second identical box of mass m which is initially at rest, as shown in the Figure below. What is the final KE (KE) of the ystem in terms of the initial KE (KE)?Explanation / Answer
Centripetal acceleration because acceleration is vector quantity.and in circular motion direction continusly changes.
So,centripital acceleration is also continously change,yes magnitude of centipital acceleration has constant value.
Questions 6 option C
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