Recent content by qszwdxefc

the only pulley system we have learned about is the atwood machine (weight connected to person through 1 pulley)

Homework Statement Demonstrate using free body diagrams and equations that, using the same force, a heavier load can be lifted with a rope and pulley system than with a rope alone. 2. The attempt at a solution To lift something off the ground without a pulley, the applied force must be...

Makes sense, I understand now. Thanks again :).

On the back of the page, the question additionally asks for the third resonant length. The textbook provides answers for a, b, and c as 143Hz, 430Hz, and 770Hz respectively. When I reversed the calculations for c), they used a third resonant length of 60.0cm, which was the length of the...

Homework Statement A closed air column is 60.0cm long. Calculate the frequency of the forks that will cause resonance at: a) the first resonant length b) the second resonant length Note that the speed of sound is 344m/s. Homework Equations Ln = (2n - 1) * \lambda / 4 fn =...

Ah, Snell's Law where \theta_2 = 90^\circ. Thanks.

Homework Statement The critical angle for a special glass in air is 44 degrees. What is the critical angle if the glass is immersed in water? Homework Equations sin(critical angle) = 1/index of refraction index of refraction of air is 1.00 index of refraction of water is 1.333...

Homework Statement Calculate the velocity a 1.0g raindrop would reach if it fell from a height of 1.0km. You may ignore all forces of friction. Homework Equations Fg = mg, where g = 9.81 m/s^2 W = Fparallel x d The Attempt at a Solution I used Fg = mg to find that Fg = 0.00981 N...

The line of best fit is a straight line. The equation of the line of best fit, calculated using linear regression, is y = 2.42x + 0.21. The slope from graphing the data is 2.5kg.

Homework Statement 1. Compare the mass of the system to the slope. Does your data support Newton's Second Law? 2. Using the words "directly" or "indirectly" briefly explain how force, mass, and acceleration are related to each other, making specific references to the parts of the...