Rotary Motion Accessory Pack - Serrata Science Equipment

Rotary Motion Accessory PackPush the screw supplied in this pack throughthe appropriate hole in the pendulum rod.Position the rod in the locating indents on theouter pulley with the screw in the centre holeof the pulley. Tighten the screw.If a mass or masses are being used in theinvestigation slide onto the rod and tightenthe thumb screw to secure in position.LocatingindentsThree-tier pulleyStudying PendulumsSelect either the Pendulum or Angular position range (Angular position range:0 - 360 degrees, Pendulum: ± 20 degrees).CentrescrewPendulum rodUse the hole at the end of the rod to attach thependulum to the Rotary Motion Sensor.Rotary MotionSensorRest the Rotary Motion Sensor on the bench top toprevent it from moving. Position so that the pendulumrod will hang freely over the surface edge. Clamp theRotary Motion Sensor to a retort stand using its rodattachment.Note: Only the rod should be clamped not the body of the Sensor.With the pendulum hanging freely and stationary, pressthe reset button on the Rotary Motion Sensor to set zero.PendulumrodMass(optional)The pendulum can be used with or without a mass attached. The mass can bemoved up or down the rod to change the effective length of the pendulum.The length of the pendulum is defined as the distance from the point ofsuspension to the centre of gravity of the bob. To find the centre of gravity, placethe pendulum rod/mass rod on a “knife “ edge and find the point at which it isbalanced. Measure the distance from the point of suspension to the centre ofgravity and use this value to give more accurate results.Rod/mass balancedat this pointLength (l)Centreof gravityHole used as apoint of suspension2