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What the Investigating Motion - Required Practical Tests
Tests how mass and acceleration affects acceleration using Newton's Second Law.
Investigating Acceleration- Required Practical Method
1. Toy card attached to a attached to a piece of string.
2. The string is looped around a pulley.
3. Other end of string attached to a 100g mass.
4. Weight of mass provide force acting on car.
5. Timer, draw chalk lines at equal intervals.
6. Hold toy car at starting point, let go when ready.
7. Resultant force from weight acting on spring car accelerate.
8. Record time car passes distance marker. Record mobile phone.
9. Repeat several time each case decrease mass.
Investigating Motion - Required Practical Effect of Mass
Add masses to the trolley one at a time to increase the mass. Don't add mass to the hook, record the average acceleration for each mass.
Investigating Motion - Required Practical Effect of Force
Keep the total mass but change the mass on the hook. Start with all the masses loaded onto the trolley, and transfer the masses to the hook one at a time, to increase the accelerating force. The mass stays of the system stays the same as you are transferring the mass from one part of the system to the other. Record the average acceleration for each force.
Newton's Second Law can explain the results
The law can be written as F=ma. So the F= weight of hanging masses, m= mass of the whole system and a= acceleration of the system.
Acceleration toy car proportional to the mass on the other end of string. Increase mass of toy car, acceleration decreases.
