Technical data

Newton's law: acceleration as a function of mass with Cobra SMARTsense

Article no: P1004369

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Principle
The measuring carriage on the carriageway is uniformly accelerated by a mass which is connected to the carriage via a deflection roller with a thread and generates a force in the gravitational field. The concrete value of the acceleration is calculated from the tensile force and the accelerated mass from the 2nd Newtonian Axiom.
Benefits

Especially understandable and didactically prepared description of the experiment (relevance to everyday life, etc.) including protocol questions.
Future-oriented teaching: Integration into digital science lessons with tablets or smartphones.
Increased motivation of students by using the intuitive measureAPP.
Increased media competence.

Tasks

Pupils accelerate a car with variable mass on a roadway with a constant train weight and measure the travel time the car needs for a distance of 50 cm. To do this, the pupils gradually increase the total accelerated mass (car mass + train mass) from 65 g to 185 g.
The pupils evaluate the measured data and obtain a linear relationship between acceleration and accelerated mass, from which they determine the slope.

Learning Objectives
In this experiment, the students are to be led experimentally towards the simplified formulation of the 2nd Newtonian axiom.

Scope of delivery

Track, l 900 mm	11606-00	1
Meter scale, demo. l=500mm, self adhesive	03005-00	2
Cart for measurements and experiments	11060-00	1
Shutter plate for cart	11060-10	1
Holding pin	03949-00	1
Cobra SMARTsense Photogate - Fork light barrier 0 ... ∞ s, two pieces (Bluetooth)	12909-00	1
Adapter plate for Light barrier compact	11207-22	2
Silk thread, l = 200 m	02412-00	1
Weight holder, silver bronze, 1 g	02407-00	1
Slotted weight, silver bronze, 50 g	02206-03	3
Slotted weight, silver bronze, 10 g	02205-03	4
Slotted weight, blank, 1 g	03916-00	4
Pulley,movable,dia.40mm,w.hook	03970-00	1
Rod for pulley	02263-00	1
measureAPP - the free measurement software for all devices and operating systems	14581-61	1