Conservation of energy

a) Rolling bed

Length: 500 mm
Height: Adjustable up to 100 mm
Sensors: Start and stop (2 nos)
Sensor position: Fixed
Objects: Sphere, solid cylinder, hollow cylinder (3 nos)

b) Time interval clock

Range: 0-999.9 sec
Resolution: 0.1 sec
Time measuring: Based on inputs from start sensor and stop sensor
Reset: Automatically on interrupting start sensor
Rated Input: 220 V/50 Hz or 110 V/60 Hz
Power consumption: <30 W