Question

A grandfather clock is controlled by a swinging brass pendulum that is 1.6 m long at a temperature of 28°C. (a) What is the length of the pendulum rod when the temperature drops to 0.0°C? (Give your answer to at least four significant figures.) 0.8512X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. mm

Answer 1

temperature is incneaied the 4his is called the decneasement also When. the the 9od expansion. and temperatione tlae length of the 1od. linean length thenmal increases cwith o- u Called lincas thermal Contraction. decneases it to K- AL k- thenmal linear so Contnaction- f+xAT) in temperature change x= (ocfficient ay linean therimal expansion AT= where fon bnass and given clange in temperatiore AT= (28-0)'c 19X106 %3D 28°C initial laugth 1.6m in above putting there values pomula -

1.6 + (19×10-6)(28) %3D ++5.32x10 न 10005.32 X 10-4 To Lo 1.59915 Ahe pendulum rod is : 59915 m 2o the length of the pendulum hod O'c"temperatune. at