Forces: Required Practical: Acceleration Flashcards

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1
Q

What equipment is needed for this practical?

A
  • Toy Car attached to a peice of string.
  • String is looped around a pully + Other end of string is attached to a 100g mass. (Weight of the mass will provide the force acting on the car).
  • Timer.
  • Desk: Draw chalk lines at equal intervals.
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2
Q

What is the method for this practical?

A

1) Hold the car at the starting point and when ready let go of the car.
- Because there is a resultant force acting through the string, the car will accelerate.
2) Record the time the car passes each interval.
3) Repeat the experiment several times + Decrease the mass on the end of the string.

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3
Q

What is a problem with this practical

A
  • If the car is moving rapidly it will be difficult to measure an accurate timel

Solution: Record the experiment with a mobile phone.

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4
Q

What is the purpose of this practical?

A
  • Investigate the effect of changing the force on the acceleration of an object while keeping the mass constant.
  • Object isn’t only the car it is the:
  • String, Car, Mass at the end of the string.
  • If we take away some of the mass from the end of the string, we have to transfer that mass onto the car, to keep the overall of the object the same.
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5
Q

What are the results from this practical?

A
  • Acceleration of the toy car, is proportional to the mass on the other end of the string,
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6
Q

What else can we investigate with this equipment?

A
  • Investigate how changing the mass of the object affects the acceleration produced by a constant force.
  • Keep the force constant at the end of the string.
  • Attach a mass to the toy car.
  • Record the car’s acceleration.
  • ## Repeat the experiment increasing the mass of the car eachtime.
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7
Q

What results should be seen?

A
  • Increasing the mass of the toy car, decreases the acceleration.
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