Find the magnitude of the angular momentum of the system

Reference no: EM13252721

Two friends hold on to a rope, one at each end, on a smooth, frictionless ice surface. They skate in a circle about an axis through the center of the rope and perpendicular to the ice. The mass of one friend is 81.0 kg and the other has a mass of 125.0 kg. The rope of negligible mass is 4.5 m long and they move at a speed of 4.70 m/s.

(a) What is the magnitude of the angular momentum of the system comprised of the two friends? kg Â· m2/s

(b) They now pull on the rope and move closer to each other so that the rope between them is now half as long. Determine the speed with which they move now. m/s

Reference no: EM13252721

Questions Cloud

Determine the placement of departments : Determine the placement of departments for a newly designed facility that will minimize total transportation costs using the data in the following tables.Assume that reverse distances are the same.

What is the magnitude of the instantaneous current at 20 us : A charged 100- picoFarad capacitor has initial voltage across it of 10 V. A 100 kohm resistor is suddenly connected across the capacitor (at t=0) to discharge it. What is the magnitude of the instantaneous current at 20 usec

Charged carboxylic acid groups at equilibrium : Acetic acid has a pKa value of 4.75. If we add 10 mM of acetic acid to DI water with an initial pH value of 6.0, what will be the final concentration of charged carboxylic acid groups at equilibrium?

What is the approximate rise time step response : (a) find the value of a and K so that the relative damping ratio of the system is 0.5 and the rise time step response is approximately 1 s. (b) with the values of a and k found in previous question

Find the magnitude of the angular momentum of the system : Two friends hold on to a rope, one at each end, on a smooth, frictionless ice surface. What is the magnitude of the angular momentum of the system comprised of the two friends

Control production costs : Ronald's has been in the fast food business for five years. After struggling for two years, it finally broke even, and the french fries it offers are its most popular product. However, during the past year, its business has suffered because t..

Compute the empirical formula of the compound : A compound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78 g of nitrogen and 4.05 g of oxygen. Calculate the empirical formula of the compound.

Estimate the actual percentage of idle time : -Based on the initial results,aproximately how many observations would you require to estimate the actual percentage of idle time to within 5 percent with a confidence of 95 percent?

Define potassium iodide is added to salt : In countries where potassium iodide is added to salt, iodine deficiency or goiter has been almost completely eliminated. The recommended daily allowance (RDA) for iodine is 150 pg/day.

User Account

All Pages