Applied Mechanics and Graphic Statics
A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

Is not changed but weight of the bob is increased
Must be decreased
Is not changed but weight of the bob is decreased
Must be increased

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Applied Mechanics and Graphic Statics
Periodic time of body moving with simple harmonic motion, is

Inversely proportional to its angular velocity
Directly proportional to its angular velocity
Inversely proportional to the square of its angular velocity
Directly proportional to the square of its angular velocity

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