#6877

2626

Oct. 31, 2017, 5:15 p.m.

⚐ Report

Schafer: Air resistance and gravity. That's all we care about today. //Hammond walks in Hammond: That's IT? That's all you care about?! (waits for compliment) Schafer: Yeah, well we certainly don't care about you!

#6872

77

Oct. 30, 2017, 2:09 p.m.

⚐ Report

//Talking about gravitational pull Schafer: So if Alan and Shariar are one meter apart, the gravitational pull would be- //Alan scoots closer to Shariar //Shariar sits awkwardly Schafer: Or... half a meter. That works too. And since we're already awkward, lets get more awkward. Let's say each of you are 100 kg. Which I know is not true, because you'd be over 200 lbs. Are you accelerating towards each other? Class: Uh... Schafer: Yes! But the gravitational pull is so little you cannot see it. Student: Could Shariar be accelerating away? Scafer: Well, there are both attractive and repulsive forces... Class: Ooh...

#6871

2323

Oct. 30, 2017, 1:57 p.m.

⚐ Report

Schafer: When you get a vicious cycle in life, what do you do? Students: ...? Schafer: Calculus!

#6865

5151

Oct. 27, 2017, 11:32 p.m.

⚐ Report

/Demonstrating forces using a student in a scale Schafer: Now, as I pull up on him, [grabs Aaron by the arms and pulls up] you will notice that the weight on the scale decreases. Aaron: Lose twenty pounds with this quick, easy trick.

#6862

2020

Oct. 27, 2017, 6:37 p.m.

⚐ Report

//Talking about normal force and sleds Schafer: So my kids will be like, 'Dad! Can you push our sled?' And I'll be like 'No.' And before you say that I'm a terrible parent, hear me out. I told them, 'I will not push your sled because if I push, the force vector will not only have a horizontal component but also a vertical one downwards which would lead to increased friction cue to more normal force and thus you would go slower. But I will pull your sled, because that vector points up.' Student 1: And the sled would hit your shins. Schafer: Well actually, I tie this big long rope around my waist and I walk. And then the kids fall off, and I just keep walking.

#6851

3535

Oct. 25, 2017, 7:40 p.m.

⚐ Report

//after using Chad as an example of tension Student: So what do we call Chad's force? Schafer: F contact. //pause Schafer: Or f chad.

#6847

135139

Oct. 25, 2017, 7:34 p.m.

⚐ Report

//explaining ramp gravity Schafer: Yes. Winner minus loser. //Ostrander enters the room Schafer: Speaking of losers...

#6834

4242

Oct. 24, 2017, 1:50 p.m.

⚐ Report

//Talking about tension Schafer: Because I want an absurd answer, I'm going to ask the most absurd person in the class. Carlos: Arthur Schafer: Yep. Schafer: Arthur! Is the box accelerating to the left? Arthur: No, it's a box. Schafer: Is the box accelerating to the left? Arthur: No, it's a box. Scafer: Is the box accelerating down? Arthur: No, it's a box. Schafer: Thank you, Arthur.

#6827

1820

Oct. 23, 2017, 11:43 a.m.

⚐ Report

//Student 1 injured his arm over the weekend and was wearing a sling Schafer: What happened to you? Student 1: I drove my bike into a stationary car and fell on the ground. Schafer: The same thing happened to me, but I was 7 and learning how to ride a bike, what's your excuse?

#6813

1525

Oct. 20, 2017, 3:53 p.m.

⚐ Report

//Schafer talking to Arthur about having on way too many jackets Schafer: Well I guess it’s going to be a really hot class. Alan: Yeah, cause I’m in it. *dabs* Schafer: Did you just dab? Alan: Yeah. Wanna try? Schafer: I’m good. Arthur: Hi good, I’m Arthur.