Describe how the number of slotted masses needed to move the block varies with the weight on top of the block.
Answers
Answer:
Investigate the effect of varying the force on the acceleration of an object of constant mass
There are different ways to investigate the effect of varying the force on an object. In this required practical activity, it is important to:
make and record measurements of length, mass and time accurately
measure and observe the effect of force
use appropriate apparatus and methods to measure motion
The diagram shows apparatus that can be used in this investigation. A constant stream of air reduces the friction between the glider and the air track.
o investigate the effect of varying the force on the acceleration of an object.
Method
Position an air track on a bench with a bench pulley at one end and two light gates above the track. Cut an interrupt card to a known length (such as 10 cm) and attach it to an air track glider.
Connect the glider to a hanging mass by a string the length of the air track passing over the bench pulley. Make sure the air track is level and that the card will pass through both gates before the mass strikes the floor.
Set the data logging software to calculate acceleration.
Add 5 × 20 g slotted masses (0.98 N of force) to the end of the string.
Release the glider, then record the weight and acceleration.
Repeat steps 4 and 5 two more times, and calculate a mean value for the acceleration.
Repeat steps 4 to 6, removing one of the slotted masses each time (giving forces of 0.78 N, 0.59 N, 0.39 N and 0.20 N.