An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 12 complete swings in a time...

An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 12 complete swings in a time of 38.4 seconds. From this measurement she calculates the acceleration due to gravity on the Mars.