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Centripetalacceleration

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Physics
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De Anza College
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Partner’s name Title – Centripetal Acceleration Objectives To calculate the net force on an object moving in Uniform Circular Motion and compare to the expected value. Graphically calculate the mass of the object moving in Uniform Circular Motion and compare with expected value. Theory Mass Rotating in Uniform Circular Motion Consider the Centripetal Force Apparatus below. The mass M bob is rotating in uniform circular motion about the vertical rod in a radius R. R ar Mbob Applying Newton’s 2nd law through radial direction to bob, But if the velocity is V, Again we know that, Therefore, ( ) Now, Equipment       Centripetal force apparatus Set of masses and hanger Stopwatch String Level Ruler Procedure Part 1 1. Removed mass Mbob from apparatus and measured the mass with triple-beam balance. Placed mass Mbob back on the apparatus and did not attached the spring. 2. leveled the platform with the level and aligned the mass pointer with the vertical pointer. 3. Measured the radius R. 4. Attached spring to mass Mbob. 5. Rotated Mbob at constant speed so that bob pointer is aligned with the vertical pointer. 6. Measured the time for 20 revs 3 times and calculated the average period. 7. Calculated the radial acceleration ar using the average period. 8. Calculated the net force Fnet . Part 2 1. The spring was attached to mass Mbob. 2. The string was attached with hanger to mass Mbob. 3. Added mass to hanger until the mass pointer and vertical ...
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