6.3 – Determining Acceleration Due to Gravity Using a Simple Pendulum (Leaving Cert Physics): Quizzes

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6.3 – Determining Acceleration Due to Gravity Using a Simple Pendulum
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What is the main aim of the simple pendulum experiment?

To find the value of g

What is the formula relating period and length for a simple pendulum?

T=2πlgT = 2\pi\sqrt{\frac{l}{g}}

Why should the bob be made of dense material like metal?

To minimize air resistance effects

What maximum angle should the pendulum swing through for simple harmonic motion?

Less than 10°

What should be plotted on the graph to get a straight line?

T2T^2 against length

What characteristic should the T2T^2 vs length graph show?

Straight line through origin

How do you calculate g from the slope of the graph?

g=4π2slopeg = \frac{4\pi^2}{\text{slope}}

Where should you measure the pendulum length to?

To the centre of the bob

How many oscillations should you time to find the period?

20 complete swings

Why should you time multiple oscillations instead of just one?

Reduces impact of reaction time

What value should your calculated g be close to?

9.8 m/s²

What range of pendulum lengths should be tested?

0.3m to 1.0m

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