Recent content by Quant ummm?

Can a spring balance be in "lbs"? Torque = F x r How would I calculate the Torque in the case that the force applied to the lever is perpendicular to the direction of gravity? e.g. force applied to a door Is it correct if I multiply the lbs to just the length? Thank you for your help. The SI...

That's brilliant, thank you very much for your help.

A torque is a rotational force about a fixed point so you don’t really exert a torque on a lever, you exert a torque with a lever. Though I suppose there may be a continuous set of torques along its length. If you can use a torque wrench as your lever to exert your force about a fixed point...

Hi there, I am dealing with an inelastic, collinear momentum exchange of the form: m1v1+m2v2=m1u1+m2u2 where m1 & m2 are known. v1 & v2 are both 0 u1 & u2 are both unknown, however MOD(u1)+MOD(u2) is known (ie the sum of modulus of each speed, I don't know how to do straight...

Hi there, I understand (to a degree) Pauli's exclusion principle in terms of electrons in an atom but I'm a little confused about the scales involved with free electrons, say electron gasses in metals... My textbook gives an example: "consider a 1cm cube of copper at room temperature...