Recent content by dREAPER

Ahh thank you. I missed the units for gravity (it was in km, not m). Calculated it and got 92.3469 m/s^2. Was correct.

g= G_m/R^2 which came out to 1.81*10^6 m/s^2 From there I plugged my variables into 2a\Delta y = v_f^2 - v_0^2 2(-1.81*10^6) 500,000 = 0 - v_f^2 = 1.08*10^6 m/s Then I replaced a with g of earth, 9.81, since I calculated v_0. 2(-9.81) (delta y) = 0 - (1.08*10^6) = 55.4223 km

V_f = 0 since it's falling back down? I plugged my values, and got 55.4223 km. Wasn't correct though. Is my v_f value correct?

I don't think we've covered that equation yet. Anything else that you can think of? This chapter covers Newton's Law of Gravitation.

Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject material as high as 500km (or even higher) above the surface. Io has a mass of 8.94×10^22 [kg] and a radius of 1815km . Ignore any variation in gravity over the 500km range of...

mg? With T pointing upward.

My bad. Here it is. http://img192.imageshack.us/img192/2402/image565.th.jpg

Homework Statement When a patient’s injured neck is healing, it is often desirable to prevent the weight of the head from pushing down on the neck. This can be accomplished with the system of pulleys shown in the figure. The pulleys are all small and extremely light in weight and have no...