# Can you solve these physics riddles? ft Simone Giertz – Part 1/3

Creator: Dianna Cowern
Editor: Jabril Ashe
Kyle Norby/ Dianna Cowern

Thanks to Dan Walsh!

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Fahad Hashmi is one of the known Software Engineer and blogger likes to blog about design resources. He is passionate about collecting the awe-inspiring design tools, to help designers.He blogs only for Designers & Photographers.

### 25 thoughts on “Can you solve these physics riddles? ft Simone Giertz – Part 1/3”

• September 17, 2017 at 9:31 am

This is easy intro to physics stuff, ask some harder stuff. Like something from statics or dynamics, or just something more mind bending.

Btw answer is: which ever one has the higher ffr. PE is greater on the heavier ball and since both balls are equal size, shape, and have the same drag coefficient it literally just comes down to drawing an FBD, after that it's obvious. Higher velocity = greater air resistance acting upon the object.

• September 17, 2017 at 9:31 am

i dont think it matters whether both spheres have the same surfaces, right? at terminal velocity, weight = air resistance. so for air resistance, iron ball > wooden ball.

• September 17, 2017 at 9:31 am

Bringing our Simone, yall look alone

• September 17, 2017 at 9:31 am

its on the left so that the friction coefficient can never be greater then the counter rotation torque of the pedal to sprocket arm (left rotating sprocket, to right rotating pedal,) which if right hand threaded would self loosen. the same principle is use on any leftward rotating arbor that you don't want to come loose (motors, fans, counter shafts and so on.)

• September 17, 2017 at 9:31 am

both balls experience the same air resistance after a while due to terminal velocity caused by gravity and air resistance.

• September 17, 2017 at 9:31 am

"Ok, so it's right-y tight-y…" :,,D

• September 17, 2017 at 9:31 am

The lighter one experience a higher force of air resistance .

• September 17, 2017 at 9:31 am

The pedal creates friction on the screw in the left direction, so it would unscrew a normal screw.

• September 17, 2017 at 9:31 am

The Left handed screw is on the left side because its the only side that goes counterclock-wise 🙂 Thats my basic interpretation lol Even though pedals are free moving i dont see the need but I assume that is the most basic answer haha

• September 17, 2017 at 9:31 am

Should be the same air resistance on both spheres or not? Air resistance only is connected to the size and Form of the object (which is the same on both spheres) and has nothing to do with the objects mass. So I would guess at least

• September 17, 2017 at 9:31 am

At terminal velocity surely they fall at the same speed but before that the density (not weight) is a factor on how fast the body reaches terminal velocity. I may be wrong because I am more like Frank Einstein than Albert.

• September 17, 2017 at 9:31 am

I like you more with black background

• September 17, 2017 at 9:31 am

Riddle for Diana, can you have AC current and DC current on the same line ? will they interfere with each other ?

• September 17, 2017 at 9:31 am

I am 11 and I new the bike one because I ride bmx

• September 17, 2017 at 9:31 am

Howdy there, Diana! I am betting same surface shape and size you will have the same air resistance, therefore, if released at the same time will fall at the same rate. I haven't looked ahead or read comments.

• September 17, 2017 at 9:31 am

Simone REALLY looks like my cousin!

Edit: Hi