Question

circular motion lab. explain how the rotating mass in this lab behaves like the passenger on the "barrel of fun" carnival ride? what provides the centriprtal force for the experiment ? What provides the centripetal force on the "barrel of fun" ride?

Circular Motion The centripetal force acting orn the rotating mass is given by: 4T MR where M mass of the rotating mass R radius of orbit T period of orbit Procedure (1) Clamp the base of the apparatus to the table so that it cannot slide across the table and so that a mass can hang from the pulley without hitting the table. the diameter of the rotating pole with a vernier caliper. Divide by two for Radius ) Measure (3) Use a mechanical balance to determine the mass of the rotating pendulum (4) Place 950 grams on the hanger (note the mass of the hanger is 50 grams) 4) Attach a string to the pendulum and the mass holder going over the pulley. Then adjust the pointer until the rotating mass is directly over the pointer. Adjust the horizontal pole at the top so the strings hang vertically down when the pendulum is above the pointer (5) Start spinning the pole until the mass is rotating in a circle directly above the pointer. Have someone hold a white piece of paper behind the mass so that it is easier to see when it passes directly over the pointer (6) Using a stopwatch determine the time it takes for 20 orbits. You will have to keep rotating the pole to keep its radius constant!l! Do this three times, take the average and enter it in excel. (7) Measure the distance from the pointer to the edge of the rotat ing pole. (8) Remove 200 grams from the hanger and repeat steps (4)-(8). 0.0065m -_a_ K Mass of rotating objects 0-4 Time for | Period | Hanging weight of centripetal | % (kg) (N Radius of rotating pole Distance | Radius | Radi )istance | Δ rom pointer pointer orbit of ortit 20 orbits T (mass Mass to pole (m) to pole (m) (m) C)(s) 0.18m Diffe Force rence from of 865 01765 D.i66 0.1565 0-1465 11.44 0.5720 1.000 3.81 10 06 2.516 0.53 0.900 8.829 8.842 01Ma 094 3.086 13.00 l0.b500 0.700 6:867b.53 u.92 0.16m 2 09 0.6025 0.8007.948 rm 13-31 10,1b55 | 0.600 | 5.886 15-837 10.3360 Questions (1) Derive the expression for centripetal force acting on the rotating mass, as shown on the front (2) What is the equation for the error in the radius of the orbit? Write it here and give a sample calculation (3) Determine the percent difference in the force measurements for each trial. (use the most accurate method as the 'correct' value, and enter as a column in excel). Write a sample calculation here. (4) Why does the driver of a vehicle push on the steering wheel and lean to the left as the vehicle turns left. Explain why this happens (5) Explain how the rotating mass in this lab behaves like the passenger on the "barrel of fun" carnival ride? What provides the Centripetal force for the experiment? What provides the centripetal force on the 'barrel of fun' ride? washing madhine pror which

Answer 1

In the above experiment the ritating mass gets a centripetal force due to motion in circular path like tue case for a passenger in "barrel of fun"

In this above experiment the necessary centripetal force is provided by the spring.When the spring is attached to the rotating mass

M_R, it gets pulled.

In the barrel of fun case the centripetal force was provided by the wall.