Recent content by DanielleG

Thank you!

Homework Statement 17. Give the correct tension, T, in the marked rope for each situation. The rope is held so the system is stationary. All ropes and pulleys are massless and frictionless. A) T = W B) T = W/2 C) T = W/3 D) T = 2W E) T = 3W/2 F) T = 2W/3 G) T = W/7 H) T = W/5...

So the minimum speed needed to keep a ball in circular motion occurs when Ft = 0. Does that mean the weight is what's keeping the ball going in a circular motion? And if that's the case, then the tension in the string is definitely less than the ball's weight.

The centripetal force! So Fc = Ft + Fg, which can be rearranged to give Ft = Fc - Fg. Does that mean the tension in the string is greater than the ball's weight?

Hmmmm, okay, I'll give it some thought. I am basically positive it stands for centripetal force.

I've drawn a diagram and I know that at the top both the weight and tension are pointing down, but I am unsure of how to know which is smaller or larger.

Homework Statement Answer True, False, or Cannot tell to each of the five statements below. A small projectile is launched horizontally 1 m above the surface of a smooth, airless planet, with sufficient speed for orbit. A bug riding in a small hole in the projectile has apparent weight...

Thanks, right after I posted this I realized I had all the necessary information!

Homework Statement A Red Cross airplane is traveling horizontally east at velocity v_0 = 80.0 m/s and height h = 350 m above the ground. The plane carries emergency supplies for a village inaccessible by road. The plane will drop the package (without a parachute) into a pile of soft hay...

True!

Homework Statement The diagram shows the impact of 20 projectiles launched at the same speed and angle. What is the uncertainty in the impact position? (see attached file for picture of diagram) Homework Equations No equations, my lab instructor said through an email that I can get it "just by...

The weights would be different, but I think they would still both be true weights. I think true weight is just mass x gravity wherever a person/object is.

Yes, it is. The force of gravity on the moon is 1.622 m/s^2, while gravity on Earth is 9.8 m/s^2.

No, it does not! Therefore, B is true! Thank you very much!