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why we express the unit of torque in Nm.even though it can
be expressed as Joule ( J )?
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Answer Posted / manojsiva v
work done(form of energy)=force.distance (dot product ie scalar quantity,energy is always scalar)
torque=force*distance (vector quantity,cross product)
torque and energy are related by
energy=torue.(theta)
a torque of 1 N m applied through a full revolution will require an energy of exactly 2π joules
torque=1Nm
theta=2π
hence conventionally in SI unit energy is represented in joule and torque is not a form of energy so Nm.
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