Homework - 10/18/10

Two blocks are tied together and hung from the ceiling by two strings as shown above. The mass of the upper block is 2 kg and the lower block is 1 kg. Determine the tension in each string.

Remember: For full credit, you need to fill the entire page. You must include the free body diagram, show all of your work, and explain if your answer seems reasonable or not.

Homework - 10/14/10

Three bears each push on a 25kg crate full of kittens with 100 N. Kitten lover and long-time bear hater, Mr. Aul steps in to the rescue. Mr. Aul pushes back with 500 N. What is the magnitude and direction of the crate's acceleration?

Remember: For full credit, you need to fill the entire page. You must include the free body diagram, show all of your work, and explain if your answer seems reasonable or not.

Homework - 10/4/10

An arrow is fired from a bow with an initial speed of 100 m/s at an angle of 40 degrees.

a. Determine how much time the arrow spends in the air.

b. Determine the maximum height reached by the arrow.

Remember: For full credit, you need to include the diagram, mathematics, and explanation to fill the entire page. For the explanation, remember to explain how you knew which equation to use and whether your answer seems reasonable.