Acceleration and net force
Instruction: Drag the hand to pull the trolley down the runway using different no. of elastic
threads. Press <Plot graph> to plot a graph of acceleration a against the no. of elastic threads N. Find
the relationship between a and the net Force F acting on the trolley.
Next trial
Reset
motion sensor
friction-compensated runway
The trolley is accelerating.
The trolley is moving at constant speed.
Display of the data-logging program
velocity (m/s)
time (s)
2
1
0
0.5
1.0
1.5
2.0
2.5
| Acceleration | |
| = slope of v–t graph | |
| = ΔvΔt | = {{acceleration.toFixed(2)}} m s−2 |
| No. of elastic threads N (proportional to the net force F) |
a / m s−2 |
| 0 | 0 |
| {{eThread.m1}} | {{accelerationObj.a1}} |
| {{eThread.m2}} | {{accelerationObj.a2}} |
| {{eThread.m3}} | {{accelerationObj.a3}} |
| {{eThread.m4}} | {{accelerationObj.a4}} |
Plot graph
Show experiment
acceleration a against the number of elastic threads N
Δt
Δv
a / m s−2
2
1
0
1
2
3
4
N (∝ F)
Force applied is not constant during motion, please try again. You should keep dragging the hand to pull the trolley down the runway.