Recent content by Lnewqban

  1. Lnewqban

    Construction What tool drills this type of hole?

    Not all these tools have a similar angle. Not critical for soft wood, but important for drilling metal and other hard materials. Please, see: https://en.m.wikipedia.org/wiki/Countersink
  2. Lnewqban

    Engineering Bending Moment for Simply Supported, Overhanging Beam with two Overhangs

    This shaft is over-supported, meaning it works as a statically indetermined beam. That situation requires a slightly different approach. Please, see: https://mathalino.com/reviewer/mechanics-and-strength-of-materials/statically-indeterminate-members
  3. Lnewqban

    I Optimal space between anchor points on a long piece of material

    What do you mean by even force in this case? In what direction is that force acting? Each anchor will produce similar clamping force between both members of the assembly.
  4. Lnewqban

    Torque on a Pivot Point With Multiple Forces and Different Directions

    The result is matematically correct as it is the addition of two negative values. However, we are not sure about the exact statement of your teacher. Perhaps the location of the signs in the equation? For the moment induced by F1, the negative sign should be associated to the vertical component...
  5. Lnewqban

    Engineering Crane at 45-degree angle supports load -- Find principal boom stresses

    I can’t clearly see in the diagram where points A and B are located in the cross section of the boom. Could you clarify that, as well as your main question, please?
  6. Lnewqban

    Projectile Motion Problem Involving Initial Velocity and Gravity Only

    Try the Pythagorean theorem as verification of your calculations, using the launch angle this time. Also, isn't the physical meaning of this equation that a projectile launched vertically at 12.25 m/s takes 2.5 seconds to reach the maximum height, point at which Vy is zero?
  7. Lnewqban

    Hello from Brazil!!

    Welcome! :smile:
  8. Lnewqban

    Engineering Bending Moment for Simply Supported, Overhanging Beam with two Overhangs

    Welcome, @benwb93 ! What formula (which works for a beam with one uniformly distributed load) are you referring to? Could you post an image with better quality for us to be able to see its details? Could you also post a handmade diagram of the situation that you describe?
  9. Lnewqban

    I Finding yield strength with a load/displacement curve

    Please, see: https://mathalino.com/reviewer/mechanics-and-strength-of-materials/solution-to-problem-606-double-integration-method https://mathalino.com/reviewer/mechanics-and-strength-of-materials/chapter-6-beam-deflections 😎
  10. Lnewqban

    HVAC Why is my air conditioner making sounds?

    Then, the noise could have two sources: 1) Air bubbles and humidity in refrigerant, as explained by @Tom.G above. 2) Mechanism moving the vent based on changes of the percentage of airflow. I would not worry much about it, unless it interferes with your sleeping time. Best!
  11. Lnewqban

    Ring roller power

    You are welcome. :smile: Note that the very first bending is achieved by pushing the material down and at the middle point between the two bottom rollers with brute force, making it reach its yield point (plastic state) only in the cross section where the biggest moment is "felt", which is...
  12. Lnewqban

    B Why don't cars accelerate according to F = ma?

    Welco Welcome, @tharindu_ ! :cool: Besides what has been explained above, the torque produced by a car engine depends on its rotational speed. It increases with the rotation until reaching a maximum value and then decreases. The gears of a transmission help with that, but it is...
  13. Lnewqban

    Ring roller power

    Welcome, @Crazy Old Coot ! Your assumptions are correct. Consider that the number of passes to reach the desired final radius of the ring determines the forces on the rollers and bearings, as well as the torque demanded from the motor. Therefore, a small motor can achieve the same in small...
  14. Lnewqban

    HVAC Why is my air conditioner making sounds?

    You are welcome. The pump is an additional item that is sometimes installed inside the indoor unit by the installer in cases where natural drain of the condensate (water generated during cooling) is difficult to achieve. Those are sometimes noisy when cycling.
  15. Lnewqban

    B Physically speaking, what happens in Torricelli’s experiment?

    I I recommend you to visualize isobaric planes for static fluid problems. Unless the fluid is in movement and/or accelerating (other than vertically, as shown in the diagram showing fluid located inside an accelerating elevator), those isobaric planes, which contain all points with similar...
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