NANDAX · LEARN WITH SIMULATIONS
Simple Pendulum Lab
Experiment worksheet · NCERT & competitive learning
Name: _______________________Class: __________Date: __________
Learning objective
Explore period dependence on length and gravity, while keeping the amplitude small.
Investigation procedure
- Set length to 1.0 m and Earth gravity to 9.81 m/s².
- Measure the period using the elapsed-time readout.
- Double the length. Check whether the period doubles or increases by √2.
Observation and reasoning
1. Does bob mass affect the ideal small-angle period?
2. If length becomes 4L, what happens to T?
3. Why is the amplitude restricted to small angles?
Teacher answer key
1. No. Mass cancels from the ideal pendulum equation.
2. The period doubles because T ∝ √L.
3. Because the approximation sinθ ≈ θ is most accurate for small angles; larger angles have an amplitude-dependent period.