... acceleration due to gravity on earth is said to be around 9.81ms-1 regardless of the mass of the object. The motion of a freely falling object in one-dimensional motion with constant acceleration obeys the following kinematic equation (i) In general, an object moving with an initial velocity and a constant acceleration s = ut + 1/2 at2 (ii) For an object initially at rest falling in a gravitational field h = 1/2 gt2 I intend to investigate acceleration due to gravity on earth by free fall using the light gate experiment and with the above equation try to come up with a value for it. Aim: To determine the acceleration due to gravity by free fall. Apparatus: Electromagnet (Solenoid) Steel ball bearing Electronic timer Trapdoor Retort Stand Diagram: Method: 1. Clamp the solenoid and trapdoor in the same vertical line. 2. Connect these two components to the centisecond timer as shown in the diagram above. Connect the timer to the mains and close the ...

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