Physics Review Question Unit: Circular Motion Year: 1990 Question#: 61 Question: What is the magnitude of the centripetal force acting on the object? (1 ) 2.5N (2 ) 10.N (3 ) 25N (4 ) 50N What is this question really asking? Explanation by: Kate and Chris [ Return to question menu ] Answer 1 2.5N INCORRECT return to top Answer 2 10.N INCORRECT; To arrive at this answer, one may have forgotten to square the velocity. return to top Answer 3 25N INCORRECT One may not have divided by the radius to arrive at this answer. return to top Answer 4 50N CORRECT Use formulas: F=ma and to arrive at the equation Use m=1kg, v=5 m/s, and r=0.50m to arrive at the answer 50N. return to top What's this question really asking? How great is the centripetal force acting on the object? return to top |
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