The Time T , in Seconds, for a Pendulum of Length

question 73

Multiple Choice

The time t , in seconds, for a pendulum of length L , in feet, to go through one complete cycle both forward and backward (its period) , is given by $t = 2 \pi \sqrt { \frac { L } { 32 } }$ . How long is a pendulum of a grandfather clock with a period of 1.4 seconds? Round your answer to two decimal places.

• A) 4.99 feet
• B) 1.59 feet
• C) 2.5 feet
• D) 1.13 feet
• E) 3.18 feet

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