How to roll a cone circle with a diameter of 05 meters, a diameter of 04 meters and a height of 02 m

Let the support forces of the two wooden sticks on the wooden strip be Na and Nb respectively, (1) at the beginning the B rod and the wooden strip have relative motion, the friction force on the wooden strip is Nb, and the friction force at A is Na, as the B rod moves to the center of gravity of the wooden strip, NB becomes larger, NB also becomes larger, and the static friction force at A also becomes larger, but Na becomes smaller, and the maximum static friction force 0Na at A also becomes smaller, when the B rod moves to the distance from the center of gravity of the wooden strip is x1, there is: 0na1= NB1 can be solved: x1= (2) After that, the sliding friction of the B rod on the wooden strip will be greater than the maximum static friction of the A rod on the wooden strip, the wooden strip begins to move to the left, once the wooden strip moves, the static friction of the A rod on the wooden strip mutates into the sliding friction Na, in order to keep the wooden strip moving slowly, the force on the B rod must become smaller (otherwise the wooden strip will accelerate to the left), B becomes the static friction force, when the A rod moves to the distance from the center of gravity of the wooden strip is x1, the sliding friction of A rod on the wooden strip is equal to the static friction between the B rod and the wooden strip:

na1′=μ0?nb1′ na1′?x1′=nb1′?

x1 can be solved: x1 =1 2 x1= (3) After that, relative sliding occurs at b, and the friction force decreases suddenly, so the wooden bar slows down, when its speed decreases to a snack, it becomes static friction at a, and the magnitude is equal to the sliding friction at b, the wooden strip is stationary, and b continues to move to the left, and the situation of (1) (2) is repeated, and the whole motion is as follows: 1°, the wooden strip does not move, the fulcrum of the b rod is from l 2 to x1 x1 = 1 2 l 2 = 2 °, the wooden strip moves with the b rod, A rod fulcrum from the center of gravity of the wooden strip O point from L 2 to x1 x1 =1 2 x1 = 3 °, the wooden strip does not move, B rod fulcrum from the center of gravity O point of the wooden strip from L 4 to x2 x2 = 1 2 x1 = 4 °, the wooden strip moves with the B rod, A rod fulcrum from the center of gravity O point of the wooden strip from L 8 to x2 x2 =1 2 x2 = 5 ° The wooden strip does not move, the B rod fulcrum is from L 16 to x3, x3 = 1 2 x2 = 6°, the wooden strip moves with the B rod, and the A rod fulcrum is from the center of gravity of the wooden strip O point from L 32 to x3 x3 = At this time, the AB two rods have touched, the process is over, at this time the wooden strip is in a state of equilibrium, and the O point is facing the regular contact point of the two rods Answer:

The movement is that the stick moves to the left and the stick does not move), B moves to the left with the stick, the stick moves to the left and the stick does not move), B moves the stick to the left and the stick does not move), B moves the stick to the left with the stick, and the process ends

The height of the regular cone is calculated first, and then the radius is taken from this height.

Hello, I have a general understanding of the question you asked, and I am sorting out the answers, please be patient Hello friends, according to your description, this should be a round table.

Right. The results are out, no.

Hello friends, I calculated that the result is the diameter of the above meters.

8 mm. Can you tell me how it was calculated?

That triangle represents the radius above.

After finding it, 2 is the diameter.

The radius of the bottom surface of the cone is r, and the height is h, then.

The length of the busbar l= (r 2+h 2), the surface area = [r 2 + r (r 2 + h 2)].

May I?

Base area

Bottom circumference 1

Busbar length (

Side area ( 82 2) 2 82 4 Surface area 82 4 4

82 1) 4 (sq.m.).

It's very simple, a sixth-grade question.

Excuse me: Is this a cone?

Regardless of the thickness of the material and the seams, the size of the figure is as follows:

Dimensions and drawings of the round liquid blind cone.

You can use the nucleus to empty this.

The base radius is 1 2 = m).

The length of the busbar is (m).

The radius of the fan is meters.