In Figure, two skaters, each of mass 50 kg, approach each other along parallel paths separated by
Question:
In Figure, two skaters, each of mass 50 kg, approach each other along parallel paths separated by 3.0 m. They have opposite velocities of 1.4 m/s each. One skater carries one end of a long pole of negligible mass, and the other skater grabs the other end as she passes. The skaters then rotate around the center of the pole. Assume that the friction between skates and ice is negligible. What are?(a) The radius of the circle,(b) The angular speed of the skaters, and(c) The kinetic energy of the two-skater system? Next, the skaters pull along the pole until they are separated by 1.0 m. What then are?(d) Their angular speed and(e) The kinetic energy of the system?(f) What provided the energy for the increased kineticenergy?
Step by Step Answer:
We assume that from the moment of grabbing the stick onward they maintain rigid postures so that the ...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Related Video
Skateboarding is a fun and popular activity among young people, in which the participant stands on a small board with wheels and navigates different surfaces. It is considered an extreme sport and there are professional competitions for different disciplines like vertical and street skating. To start skateboarding, focus on maintaining balance and having fun. To control the board, use your feet and keep your body\'s center of mass over the skateboard. The most stable and safest riding position is to have your front foot just behind or on the front bolts of the board and your back foot close to the back of the board, near or on the heel. This position also makes quick kick turns easier. Once you have mastered the basics, you can learn various tricks to impress others. In terms of mechanics, skateboarding involves the principles of force and torque. The rider exerts force on the skateboard to make it move, and torque is used to turn the board or perform tricks. Friction between the wheels and the ground also plays an important role in allowing the rider to control the speed and direction of the board. Energy is also involved in skateboarding, specifically the transfer of potential energy to kinetic energy. When a rider jumps on a skateboard, they transfer potential energy stored in their muscles into kinetic energy, which propels the board forward. The rider can also transfer kinetic energy into potential energy by performing an aerial trick and then landing back on the board.
Students also viewed these Mechanics questions
-
The accompanying figure shows a body of mass 50 kg being lifted at a constant velocity of 1 m/s by the rope and pulley arrangement. Determine power delivered by the shaft. 1 m/s50 kg
-
An air compressor of mass 50 kg is mounted on elastic support and operates at a speed of 4 1000 rpm. It has an unbalanced mass of 2 kg at a radial distance (eccentricity) of 0.1 m from the axis of...
-
Calculate the weight of an object of mass 50 kg at the bottom and top of a mountain with (a) g = 9.8 m/s2 and (b) g = 9.78 m/s2 respectively.
-
Shown here is a list published by Electronics Weekly.com of the top five semiconductor companies in the United States by revenue ($ billions). a. Construct a bar chart to display these data. b....
-
Mr. X, age 53, owns a traditional IRA with a $215,000 current balance. Mr. X recently divorced his wife and transferred this IRA to her as part of the property settlement. Identify the tax issue or...
-
1. How does Hammerpress employ the concept of dynamic pricing? 2. Discuss the three major pricing strategies in relation to Hammerpress. Which of these three do you think is the company's core...
-
During the assembly of an exhaust valve, sufficient distance must be maintained between the valve tip and the cylinder wall. If \(85 \%\) of valve assemblies have the required distance, use Table 1...
-
Lee Wong, CPA, is auditing the financial statements of the Alexandria Corporation, which has a batch-processing IT-based system for shipping and invoicing that it purchased from a software vendor....
-
Prepare the necessary closing entries. Calculate the ending balance of Retained Earnings. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Calculate the ending...
-
What is capital budgeting? Are there any similarities between a firms capital budgeting decisions and an individuals investment decisions?
-
A Texas cockroach of mass 0.17 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has radius 15 cm, rotational inertia 5.0 x 10 -3 kg m 2 , and...
-
A bola consists of three massive, identical spheres connected to a common point by identical lengths of sturdy string (Figure). To launch this native South American weapon, you hold one of the...
-
The following is an excerpt from a conversation between Chad Lindy, the warehouse manager for House of Foods Wholesale Co., and its accountant, Summer Roseberry. Wholesale operates a large regional...
-
A sheet of glass \(\left(n_{\text {glass }}=1.5 ight)\) is coated with a \(90.6-\mathrm{nm}-\) thick layer of magnesium fluoride \(\left(n_{\text {coaring }}=1.38 ight)\) to prevent reflection in the...
-
An indicator of illegitimately reported sales is a sudden change in the _________________ .
-
A \(0.500-\mu \mathrm{m}\)-thick flake of glass \(\left(n_{\text {glass }}=1.52 ight)\) from a broken cover slip is floating on water \(\left(n_{\text {water }}=1.33 ight)\). If white light initially...
-
Sunbeam captured extra sales revenue by extending its ____________ date by two days.
-
A narrow solid obstacle is placed in the path of the electron in Figure P34.21. Does the electron have a chance of reaching the detector? Data from Figure P34.21 electron detector obstacle
-
Assuming normal financial and economic conditions, what are the main advantages of a central bank maintaining low-risk, short-term assets on its balance sheet?
-
When the Department of Homeland Security created a color-coded system to prepare government officials and the public against terrorist attacks, what did it do right and what did it do wrong?
-
A 1.397 g sample of thymol, C 10 H 14 O(s) (a preservative and a mold and mildew preventative), is burned in a bomb calorimeter assembly. The temperature increase is 11.23 C, and the heat capacity of...
-
A conducting spherical shell of radius 15.0 cm carries a net charge of -6.40 C uniformly distributed on its surface. Find the electric field at points (a) Just outside the shell and (b) Inside the...
-
A thin square conducting plate 50.0 cm on a side lies in the xy plane. A total charge of 4.00 x 10-8 C is placed on the plate. Find (a) The charge density on the plate, (b) The electric field just...
-
A conducting spherical shell of inner radius a and outer radius b carries a net charge Q. A point charge q is placed at the center of this shell. Determine the surface charge density on (a) The inner...
-
This project requires an investment in fixed assets, at time 0, of 44,000,000. Assets will be depreciated straight line in 5 years. This project has a 4 year life. The revenues for each of the 4...
-
Lorenzo Company applies overhead to jobs on the basis of direct materials cost. At year - end, the Work in Process Inventory account shows the following. Work in Process Inventory Date Explanation...
-
T-bill with a $10,000 par has 174 days until maturity. The T-bill has a bank discount bid quote of 2.208% and ask quote of 2.198%. What is the return on the investment in this T-bill if the trader...
Study smarter with the SolutionInn App