Question

On the planet Newtonia, a simple pendulum having a bob with a mass of 1.31 kg and a length of 188.2 cm takes 1.58 s , when released from rest, to swing through an angle of

11.5 ^∘, where it again has zero speed. The circumference of Newtonia is measured to be 5.14×10⁴ km .

What is the mass of the planet Newtonia? (in kg)

Answer 1

eatth alch.penluluon-a-L s-IB8ACm ヲ1.98 m ebe ime 오 2.16 Liotaan faemeR the tolac et.is 2m. 5l.lot 乡 ·5·14 지

mas d the planet i mz TR で) IT where s pm

Answer 2

81). Don’t Miss the Boat. While on a visit to Minnesota ("Land of 10,000 Lakes"), you sign up to take an excursion around one of the larger lakes. When you go to the dock where the 1500-kg boat is tied, you find that the boat is bob- bing up and down in the waves, executing simple harmonic motion with amplitude 20 cm. The boat takes 3.5 s to make one complete up-and-down cycle. When the boat is at its highest point, its deck is at the same height as the stationary dock. As you watch the boat bob up and down, you (mass 60 kg) begin to feel a bit woozy, due in part to the previous night's dinner of lutefisk. As a result, you refuse to board the boat unless the level of the boat's deck is within 10 cm of the dock level. How much time do you have to board the boat comfortably during each cycle of up-and-down motion?