Why is it harder to open and shut the door if we apply force near the hinge?
Explanation: We cannot open or close the door by applying force at the hinges. Because the torque of force at the hinges is zero as perpendicular distance is zero. Hence there is no rotational motion.
Why can’t you open a door by pushing on its hinged side?
Why can’t you open a door by pushing on its hinged side? A force exerted at the hinges produces no torque about them. It’s must easier to carry a weight in your hand when your arm is at your side than it is when your arm is pointing straight out in front of you. Use the concept of torque to explain this effect.
What position and force should be applied to open a heavy door easily?
It is easier to open a door by applying the force at the free end of it because of the larger the perpendicular distance, less is the force needed to turn the body.
What three factors affect the torque?
Examples: Page 5 Torque is Determined by Three Factors: The magnitude of the applied force. The direction of the applied force. The location of the applied force.
What are the factors that determines torque?
Expert Answer:
- The factors on which the turning effect of force or torque acts are:
- – The magnitude of the applied force.
- – The distance of the line of action of force from the point of rotation of that body.
What is the most important factor affecting torque?
Friction. The most important factor affecting the relationship between torque and tension is friction.
What are the factors that affect torque value?
Though the relationship between torque and tension is linear, many other factors can affect this relationship. Some of these factors include surface texture, rust, oil, debris, material type, locking elements and human error.
What is the K value in torque?
where T is the torque measurement, K is the nut factor, F is the tension and D is the bolt diameter. With this equation, if you know K, F and D, you can multiply them to get the torque needed to tighten the bolt so that it has the right amount of tension.
Is tension the same as torque?
“Torque” is simply a measurement of the twisting force required to spin the nut up along the threads of a bolt, whereas “Tension” is the stretch or elongation of a bolt that provides the clamping force of a joint.
What is the difference between tensioning and torquing?
Torquing: The desired bolt load is obtained by a certain number of Nm on the nut (nut distortion). Tensioning: The desired bolt load is obtained by the direct axial stretching of the bolt.
What is the purpose of torquing?
Again, the purpose of a torque device is to ensure the proper torque when tightening a nut or bolt, not to loosen anything. A standard wrench or screwdriver should be used to perform those tasks. Although it might be convenient to use a torque wrench as a hammer or to loosen nuts and bolts, it should not be done.
Why bolt tensioning is required?
It’s accurate because tensioning provides the reliability required by delivering precise bolt loads to the joint. It’s fast because in contrast to bolt torquing, bolt tensioning can eliminate cross-talk and deliver simultaneous bolt load and gasket compression across the entire joint.
What is a tightening torque?
Torque tightening is the accurate application of torque to a nut so that a bolt can hold its load securely without breaking. Too much torque can break the bolt. …
How is tightening torque of a bolt calculated?
The widely recognized engineering formula, T= K x D x P (to be explained later in this article), was used to provide the chart’s values, but it must be understood that every bolted joint is unique and the optimum tightening torque should be determined for each application by careful experimentation.
At what torque will a bolt break?
If you add 33% to the torque figure listed, that should tell you the torque required to snap it. For example, if it takes 75 ft/lbs to torque to 75% yield, add 33% (25 ft/lbs) to get to the 100% yield (breakage) figure.
Is it bad to over torque bolts?
If the bolt is over-torqued, the tension can: Crush the installation material. Shorten the life of the bolt by putting too much force on it. Damage the threads by exceeding their load capacity.
Is it okay to use a torque wrench to loosen bolts?
How to use torque wrenches ? A torque wrench is a tightening tool. It is a very sensitive and precise tightening tool, and should never been used to loosen bolts. Handle your torque wrench as carefully as you treat a measurement instrument!
What happens if you over torque bolts?
Too much force can cause a technician to strip threaded fasteners or stretch bolts beyond their limits, which can result in loose nuts or cause the bolt to crack and break.
What torque should oil drain plug?
30-36 ft lbs would be fine with your drain plug. to keep things in perspective, if this is your first oil change on this car, then there would have been at least one oil changer that ran your drain plug down with an impact, and probably no one used a torque wrench.
What happens if you dont torque head bolts?
If the head isn’t torqued down properly, then the most likely failure is of the head gasket, which could lead to loss of compression, the mixing of oil and coolant, exhaust gases getting into the oil ways or cooling channels, erosion of the cylinder head, overheating and warping of the cylinder head.
Do you really need a torque wrench for wheels?
While a torque wrench is not absolutely required, it’s a good idea. You need to ensure the wheel is evenly clamped onto the hub. This prevents the wheel from warping and causing other issues. Using the lug wrench which comes with the car will get you down the road.