4) Now, what is the relation between this Resistance force(output force) and the Effort force(input force) of a machine? Required fields are marked *. Thus the opener does work on the cap. The torque required to accelerate a body is equal to the WK2 of the body, times the change in RPM, divided by 308 times the interval (in seconds) in which this acceleration takes place: The constant (308) is derived by transferring linear motion to angular motion, and considering acceleration due to gravity. Synchronous Speed, Frequency And Number Of Poles Of AC Motors, Relation Between Horsepower, Torque, And Speed, Locked Rotor Current (IL) From Nameplate Data, Effect Of Line Voltage On Locked Rotor Current (IL) (Approx. Reference to Figure A shows that the accelerating torque may vary greatly with speed. He is an avid Blogger who writes a couple of blogs of different niches. of torque must be applied to get this load turning at 1800 RPM, in 60 seconds. In mechanical systems, all rotating parts do not usually operate at the same speed. It can be the external mechanical resistance against which a machine (such as a motor or engine), acts. Therefore, we can also w ri te Mechanical Advantage MA = Load / Effort. Numerical problems on Drift velocity of electrons and electric current-how to solve? Index page for formulas, containing Fluids, Heat Transfer, Vibrations, Beams, and Finances sub-sections. Formula c n re n Disc Brake Clamp Load torque of brake effective radius Here we get the term we are discussing in this post. So resistance force is equal (magnitude wise) to the load overcome by the machine. 1- Finding out the elongation of the bar as soon as the load is applied 2- The elongation of a steel rod under a specific load 3- The source from which the formula for elongation is derived. (c) We must understand that the opener is not a source of energy, and therefore, the opener can’t provide the cap more energy than the amount of energy that we put into the opener. Now to understand these in details we need to understand the concepts behind. Explain with graphs. I am currently logging current draw, voltage, KVA and power factor on all three phases and have noticed that under load one of the phases shows a very different PF the the other two in that it is not only highly variable but much lower than the other phases. the pullout torque is near synchronous speed.2. Some loads are specified as part of the design criteria of a mechanical system. (b) The opener, in turn, does work on the cap and transfers energy to the cap.