The direction of the torque vector is found by convention using the right hand grip rule. If a hand is curled around the axis of rotation with the fingers pointing in the direction of the force, then the torque vector points in the direction of the thumb as shown in Figure 2.

How do you do the right-hand rule?

Moving charges We can remember this diagram using the right-hand rule. If you point your pointer finger in the direction the positive charge is moving, and then your middle finger in the direction of the magnetic field, your thumb points in the direction of the magnetic force pushing on the moving charge.

What is the #1 right-hand rule?

Right-Hand Rule #1 (RHR #1) Using your right-hand: point your index finger in the direction of the charge’s velocity, v, (recall conventional current). Point your middle finger in the direction of the magnetic field, B. Your thumb now points in the direction of the magnetic force, Fmagnetic.

What is the formula for torque?

Mathematically, torque can be written as T = F * r * sin(theta), and it has units of Newton-meters. When the sum of all torques acting on an object equals zero, it is in rotational equilibrium.

What is Right Hand Rule 3?

Rule #3 – The Solenoid Rule Using a third right-hand rule, we can we predict which side of the coil is north. Let your curling fingers be the direction the current is flowing. It is looping around. Then your thumb will be NORTH end of the electromagnet.

Why the right hand rule works?

The right hand rule works because we have all agreed on it. If we had all agreed on the left hand rule then the left hand rule would also work. This is similar to calling the charge on a proton “positive” and the charge on an electron “negative”.

What is Fleming right hand Rule 12?

According to Fleming’s right hand rule if we stretch 3 fingers of our right hand, then the :- Thumb will point to the motion of the conductor. First Finger points towards the magnetic field. Middle finger points to direction of the induced current.

What is energy formula?

The energy stored in an object due to its position and height is known as potential energy and is given by the formula: P.E. = mgh. Unit. The SI unit of energy is Joules (J).

How do you calculate power torque?

1. Torque (lb.in) = 63,025 x Power (HP) / Speed (RPM)
2. Power (HP) = Torque (lb.in) x Speed (RPM) / 63,025.
3. Torque (N.m) = 9.5488 x Power (kW) / Speed (RPM)
4. Power (kW) = Torque (N.m) x Speed (RPM) / 9.5488.

What is the right hand rule 2?

The second right hand rule deals with the magnetic field that is induced by current moving through a wire. Take your right hand, and wrap your fingers around the wire, with your thumb pointing in the direction that the current is flowing. Your fingers now represent the direction of the lines of magnetic force!

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What is second right hand rule?

The second right-hand rule states that if the fingers of your right hand curl in the direction of the current, your thumb points in the direction of the magnetic field at the center of a current loop. If you point your right thumb downward with the depicted field, your fingers curl clockwise.

What is right hand rule 10th thumb?

Thumb rules state that if thumb of the right hand points along direction of current, then the remaining curled , fingers of same hand gives the direction of the magnetic field due to the current.

What is Maxwell's right hand rule?

The Maxwell’s right hand thumb rule states that ‘When the conductor is held in your right hand, such that the direction of the thumb points the direction of the current and the curled finger gives the direction of the magnetic finger. … Thus, the direction of the magnetic field and current are mutually perpendicular.

What is right hand rule Class 10?

If a current carrying conductor is imagined to be held in right hand such that thumb points in direction of current,then curled fingers of hand indicate the direction of magnetic field. If current flows in downward direction then direction will be clockwise. …

When to use Fleming right hand rule and left hand rule?

Fleming’s left-hand rule is used for electric motors, while Fleming’s right-hand rule is used for electric generators. … In an electric generator, the motion and magnetic field exist (causes), and they lead to the creation of the electric current (effect), and so the right-hand rule is used.

What is Fleming left hand Rule 10?

Answer: Fleming’s Left hand rule states that if we arrange our thumb, forefinger and middle finger of the left hand right angles to each other, then the thumb points towards the direction of the magnetic force, the forefinger points towards the direction of magnetic field and the middle finger points towards the …

What is the difference between Fleming left and right hand rule?

Left-Hand RuleRight-Hand RuleThe thumb represents the direction of the thrust on the conductor.The thumb represents the direction of motion of the conductor.

What is torque in physics class 11?

Torque is the measure of the force that can cause an object to rotate about an axis. Force is what causes an object to accelerate in linear kinematics. Similarly, torque is what causes an angular acceleration. Hence, torque can be defined as the rotational equivalent of linear force.

How much torque do I need?

Generally speaking, an impact driver with 1500–1800 in-lbs of torque puts more emphasis on higher RPM. It will do 95% of the work more quickly than a tool with more torque and slower speeds. Our rule of thumb is that, if you need to reach for a socket adapter, you’re better off grabbing an impact wrench.

How do you calculate torque from kW and RPM?

kW = 0.105 x Nm x rpm / 1000. Example: A three-phase induction motor can provide 144Nm at 1480 rpm.

What is the relationship between torque and power?

Torque is the rotational equivalence of linear force. Power is work done in a time interval. The relation between torque and power is directly proportional to each other. The power of a rotating object can be mathematically written as the scalar product of torque and angular velocity.

How do we calculate efficiency?

The work efficiency formula is efficiency = output / input, and you can multiply the result by 100 to get work efficiency as a percentage. This is used across different methods of measuring energy and work, whether it’s energy production or machine efficiency.

What quantities do you need to calculate energy?

In the metric system, the units use to measure energy are Joules. A Joule is the amount of energy required to accelerate a 1 kg object to a speed of 2 m/s, or to lift a 1 kg object about 10 cm vertically. Calories, BTUs, and kilowatt hours are other units that can be used to measure energy.

How do you calculate energy in a circuit?

Electrical energy is the product of power multiplied by the length of time it was consumed. So if we know how much power, in Watts is being consumed and the time, in seconds for which it is used, we can find the total energy used in watt-seconds. In other words, Energy = power x time and Power = voltage x current.

When should we use right hand thumb rule?

The right hand thumb rule is used to find the direction of magnetic field around a current carrying a straight conductor.

What is Fleming's left hand thumb rule?

Fleming’s left – hand rule states that if we stretch the thumb, middle finger and the index finger of the left hand in such a way that they make an angle of 90 degrees(Perpendicular to each other) and the conductor placed in the magnetic field experiences Magnetic force.