Posted by **Anonymous** on Thursday, November 18, 2010 at 9:00am.

Two astronauts (Fig. P8.68), each having a mass of 84.0 kg, are connected by a 10.0 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway betwen them at a speed of 5.80 m/s. Treating the astronauts as particles, calculate each of the following.

(a) the magnitude of the angular momentum of the system

kg·m2/s

(b) the rotational energy of the system

kJ

By pulling on the rope, the astronauts shorten the distance between them to 5.00 m.

(c) What is the new angular momentum of the system?

kg·m2/s

(d) What are their new speeds?

m/s

(e) What is the new rotational energy of the system?

kJ

(f) How much work is done by the astronauts in shortening the rope?

kJ

(Could someone tell me how to do each part?)

## Answer This Question

## Related Questions

- physics - Two astronauts, each having a mass of 89.0 kg, are connected by a 10.0...
- physics - Two astronaut, as shown in the figure, each having a mass of 62.0 kg, ...
- physics - Two astronaut, as shown in the figure, each having a mass of 62.0 kg, ...
- physics - Two astronaut, as shown in the figure, each having a mass of 62.0 kg, ...
- physics HELPP!!!!!!! - Two astronaut, as shown in the figure, each having a ...
- physcis - Two astronaut, as shown in the figure, each having a mass of 62.0 kg, ...
- physics - Two astronauts, each having a mass of 78.5 kg, are connected by a 10.0...
- Physics - Two astronauts, each having a mass of 61.9 kg, are connected by a 14.7...
- Physics - Two astronauts, each having a mass M are connected by a length of rope...
- physics-rotational dynamics - Two astronauts, each having a mass of 75.0 kg, are...

More Related Questions