Visit ilectureonline.com for more math and science lectures! In this video I will find F=?, and W=?, on the block when a force of 400N is applied on a clamp. Next video in this series can be seen at: • Mechanical Engineering...
Пікірлер: 21
@14dayztimeap83 жыл бұрын
Hey Michel, is W equal to the weight of two wooden blocks here? If not, then here is a confusion. If we try to loosen the screw, we must turn the handle anticlockwise, right?(According to previous lectures) But here, you are turning ckockwise🤔
@hardikjain-brb Жыл бұрын
upwards impending is gonna loosen the screw in a part, but it should tighten it as per (a) part. Please explain
@MichelvanBiezen Жыл бұрын
You got me on that one.
@BODYBUILDERS_AGAINST_FEMINISM2 жыл бұрын
I've been doing really well in statics so far but this section has got me in a mental pretzel... thank you for sharing!
@MichelvanBiezen2 жыл бұрын
Glad the videos are helpful.
@josephmother84202 жыл бұрын
Why does a higher screw radius lead to a lower force and lower mechanical advantage? That doesn't make sense to me.
@MichelvanBiezen2 жыл бұрын
The torque on the handle is converted to the thread of the bolt pushing the bolt forward. The larger the diameter of the bolt, the less of an advantage you get from the torque of the handle. (What if the diameter of the bolt was 30 cm?, would it be more difficult to turn the bolt?)
@bibarrel51115 жыл бұрын
Hi there, may I ask what the difference is between the pitch of a screw and the lead of the screw?
@MichelvanBiezen5 жыл бұрын
The pitch is the distance from the crest of one thread to the crest of the adjacent thread. The lead is the distance from the crest of a thread to the crest of the thread after one complete rotation is made following the thread. For most screws it is the same distance, but for screws that have two separate threads on the screw (two starting points) the lead will be twice the pitch.
@bibarrel51115 жыл бұрын
Thank you so much for responding, I didn't quite get it before and now I do, I'll take that into consideration in my calculations. Your videos have been a great help to me as I'm studying for my boards. I hope you keep up the excellent excellent work.
@p-51dmustang302 жыл бұрын
For part A why do you need to add lead angle and reaction angle? I'm having difficulty with when I need to add them or subtract the angle.
@MichelvanBiezen2 жыл бұрын
The angle theta is caused by the angle of the thread (like the angle of an inclined plane), the angle phi is caused by the friction, the greater the friction, the greater the force needed to turn the screw.
@garochrissahagian17506 ай бұрын
shouldnt the FBD diagram be in F coming from right to left
@MichelvanBiezen6 ай бұрын
We didn't draw a FBD. Instead we used the standard technique of drawing a force triangle.
@SoumilSahu5 жыл бұрын
Shouldn't the direction of F be the other way(acting towards left) since you're trying to tighten the screw? The way it's drawn on the board seems like the screw is being loosened...
@notaliablename25385 жыл бұрын
I think hes just following the way the screw diagram is usually drawn, with an incline upwards to the right, but otherwise the diagram would be mirrored to make the F go towards the left and the incline would rise to the left
@1StraightPath2Islam7 жыл бұрын
Hi, Can you tell me why we are loosening the screw to tell how much the Force on the block is? If we are tightening the clamp, doesn't that mean that we're getting downward motion? But your FBD says we're having an upward motion. Kinda confused. Apreciate an answer.
@MichelvanBiezen7 жыл бұрын
Take a look at videos 25 and 26 in the playlist. That may clear it up.
@1StraightPath2Islam7 жыл бұрын
Thank you for your answer. Is it because of the force Fp turning the screw clockwise and tightening it? That's how I understood it.