Physics

Lesson:

I. Equilibrium and Elasticity

- Elasticity

II. Fluids

- Archimedes' Principle

- Bernoulli's Equation

III. Oscillations

- Simple Harmonic Motion

- Pendulums, Circular Motion

Directions:

Answerthe following problems by showing the complete solution to the problem. In return, I will give youa good and high rating. Thank you so much!

Note:Please becarefulwith thesignificant digits, units and calculationsin the problem. Kindlydouble checkthesolutionand theanswerif there is a deficiency. Kindly read the notes in number 6 to 10. And also,box the final answer. Thank you!

6. Note: The letter "i" blue icon means "The Tolerance is 4%."

What is the length of a simple pendulum whose full swing from left to right and then back again takes 3.7 5? Number n Units V An object hangs from a spring balanceThe balance registers 26 N in air, 15 N when this object is immersed in water, and 21 N when the object is immersed in another liquid of unknown density. What is the density of that other liquid? Number n Units v What is the minimum area (in square meters) of the top surface an ice slab 0.389 m thick oating on fresh water that will hold up a 916 kg automobile? Take the densities of ice and fresh water to be 917 kg/m3 and 998 kg/ms, respectively. Number n Units v A 2.50 kg block hangs from a spring. A 280 g body hung below the block stretches the spring 2.90 cm farther. (a) What is the spring constant? (b) If the 280 g body is removed and the block is set into oscillation, nd the period of the motion. (a) Number n Units v (b) Number n Units v In the gure, a 2200 kg demolition ball swings from the end of a crane. The length of the swinging segment of cable is 19.6 m. {a} Find the period of the swinging, assuming that the system can be treated as a simple pendulum. {b} Does the period depend on the ball's mass? {a} Number I Units v {b} v