Torque and Chrome

torque calculation for DC motor? I need to pick a dc motor to use for a robot. But how does one calculate the torque required of the motor? I have an angular velocity, mass of total robot, size of the wheel, and the total velocity the robot should traverse. torque = Force * radius [Nm] = mass * acceleration * radius How does I calculate acceleration? Can I assume this radial force is a centripetal force? I'm not great with mechanics. I understand the electric motor characteritics, I just need a torque before starting the design.

What is the maximum load that a 300watt electric motor...? can carry and still be able to spin at full speed? I can't figure how how to do these kinds of calculations with torque and everything. For example lets say I was going to put a heavy propellor on it or something.

Mechanical Engineering Torque Calculation Question? I'm trying to figure out how to calculate the amount of Foot Pound (or Inch Pound) of Torque it will take to lift a 200 pound weight at the end of a 12 inch arm. The application is... There are two, steel square tubes 12 inches in length fastened together with a hinge (in between the tubes). One of the tubes will be vertically welded to a base plate. The other tube will be able to rotate from 90 degrees to vertical (like a persons leg when they sit down from a standing position). The rotating tube will have a 200 pound weight on it and i need to find an electric motor that will rotate that weight from 90 degrees to virtical from the hinge point. Any help out there? Thanks

Electric Motor! Electric Motor! Electric Motor!? An electric motor can accelerate a Ferris wheel of moment of inertia 24300 kg · m^2 from rest to 10.8 rev/min in 13 s. When the motor is turned off, friction causes the wheel to slow down from 10.8 rev/min to 5.13 rev/min in 8.09 s. a) Determine the torque generated by the motor to bring the wheel to 10.8 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 10.8 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

Physics calculation help for angular speed and power?!? An electric motor provides a constant torque of magnitude t(torque) to a wheel with moment of inertia Icm = 10.0 kg·m2 that results in a constant angular acceleration of the wheel of magnitude alpha = 1.50 rad/s2, where the wheel is accelerated from rest starting at time t = 0. (a) Derive an expression for the power supplied by the electric motor as a function of time using only symbols. (b) Calculate the value of the power that the electric motor supplies to the wheel at a time of 10.0 s after the wheel starts to rotate from rest. (c) Calculate the angular speed of the wheel, in units of revolutions per minute (rpm), at a time of 10.0 s after the wheel starts to rotate from rest. Any help would be appreciated... :)

I need to choose a motor for an air compressor...... HELP!!!? Firstly - I will working in SI units. I need to choose/find an electric motor online I order to power an air compressor I am designing, allot of my work so far has been assumed witha trial and error basis. However, I need to pick a motor in order to use its torque (Nm) and revolutions per minute (RPM). I have calculated the power (watts) and included a efficiency factor of 1.6. The other calculations I have determined are as follows: Pressure: 3.5 bar (350,000 n/m^2) Volumetric flow rate: 6x10^-4 m^3/second If anybody knows any links or information in which may help me find a motor for the task at hand it would be much appreciated. Kind regards (TIA)

DC Motor as generator equation question? P = T x RPM P = U x I T = r x F P = Power in Watt T = Torque r = The length of the lever arm F = Force applied to rotor Technical Data: Torque = 0,2Nm Arm = 0,01m RPM=120 I=30mA=0,030A U=6V Problem (1) Are the two equations for P correct? Problem (2) A 6V DC motor with 0,2Nm nominal torque is spinning at 120RPM and producing 30mA of electric current. What force must be applied to the motor when the arm = 0,01m? (2) I used the given equations above: P = U x I = T x RPM = r x F x RPM ---> F = (U x I) / (r x RPM) = (6Vx0,030A) / (0,01m x 120 RPM) = 0,15N - Is this calculation correct? - Is the torque 0,2Nm data shown on DC motor how much is neccesary to start spinning the motor? - If so, does it mean it takes F = T/r = 0,2Nm/0,01N = 20N to make the motor spinn? Actually, the motor which I was aiming, probably had data something like 12V and 0,45Ncm=0,0045Nm. I calculate F = T/r=0,0045Nm/0,01m=0,45N The find out whether I get about 30mA: I=(F x RPM x r) / U = 0,45Nx120RPMx0,01m / 12V = 0,045A=45mA Information is based on facts, except, the type of motor is just a little bit unsure and what is completely unknown is, how much force is actually required to make this happen, and that's what I'm really looking for here.

How to choose dc motor? Hello, Im doing a project of an electric climbing wheelchair, now im stuck on choosing my motors now after calculation i found that i need a motor that provides1200 watt, 135 Nm and 85 rpm. of course these are after a gearhead reducer, as i studied in engineering power doesnt change when using a gearhead, but torque and rpm change according to the ratio so i found motors but with much lower power(before adding a gearhead, but after adding the gearhead ill reach to my needed spec except that power isnt 1200 watt its much lower) should i buy them or not im totally lost here what is this relation between power and torque dunno???

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 10100 kg · m^2 from rest to 12.4 rev/min in 13.3 s. When the motor is turned off, friction causes the wheel to slow down from 12.4 rev/min to 6.11 rev/min in 8.74 s. a) Determine the torque generated by the motor to bring the wheel to 12.4 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 12.4 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

A and B! No one yet seems to know how to solve this!? An electric motor can accelerate a Ferris wheel of moment of inertia 24300 kg · m^2 from rest to 10.8 rev/min in 13 s. When the motor is turned off, friction causes the wheel to slow down from 10.8 rev/min to 5.13 rev/min in 8.09 s. a) Determine the torque generated by the motor to bring the wheel to 10.8 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 10.8 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 24300 kg · m^2 from rest to 10.8 rev/min in 13 s. When the motor is turned off, friction causes the wheel to slow down from 10.8 rev/min to 5.13 rev/min in 8.09 s. a) Determine the torque generated by the motor to bring the wheel to 10.8 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 10.8 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 10100 kg · m^2 from rest to 12.4 rev/min in 13.3 s. When the motor is turned off, friction causes the wheel to slow down from 12.4 rev/min to 6.11 rev/min in 8.74 s. a) Determine the torque generated by the motor to bring the wheel to 12.4 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 12.4 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 10100 kg · m^2 from rest to 12.4 rev/min in 13.3 s. When the motor is turned off, friction causes the wheel to slow down from 12.4 rev/min to 6.11 rev/min in 8.74 s. a) Determine the torque generated by the motor to bring the wheel to 12.4 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 12.4 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 24300 kg · m^2 from rest to 10.8 rev/min in 13 s. When the motor is turned off, friction causes the wheel to slow down from 10.8 rev/min to 5.13 rev/min in 8.09 s. a) Determine the torque generated by the motor to bring the wheel to 10.8 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 10.8 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 10100 kg · m^2 from rest to 12.4 rev/min in 13.3 s. When the motor is turned off, friction causes the wheel to slow down from 12.4 rev/min to 6.11 rev/min in 8.74 s. a) Determine the torque generated by the motor to bring the wheel to 12.4 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 12.4 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

A and B! No one yet seems to know how to solve this!? An electric motor can accelerate a Ferris wheel of moment of inertia 24300 kg · m^2 from rest to 10.8 rev/min in 13 s. When the motor is turned off, friction causes the wheel to slow down from 10.8 rev/min to 5.13 rev/min in 8.09 s. a) Determine the torque generated by the motor to bring the wheel to 10.8 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 10.8 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!

No one seems to know the answer to this question.....? An electric motor can accelerate a Ferris wheel of moment of inertia 10100 kg · m^2 from rest to 12.4 rev/min in 13.3 s. When the motor is turned off, friction causes the wheel to slow down from 12.4 rev/min to 6.11 rev/min in 8.74 s. a) Determine the torque generated by the motor to bring the wheel to 12.4 rev/min. Answer in units of N · m. b) Determine the power needed to maintain the rotational speed at 12.4 rev/min. Answer in units of W. Step by step calculations! Thank you for your help!