Steve4Physics's latest activity

How do you tell the difference between a physicist and a trade-union leader?

Yes, Thanks. I see my mistake in Post #6. I overlooked the (obvious!) fact that the pulley itself has a vertical acceleration of...

@Steve4Physics: Your post made me think of an easier way to see how ##a_y## is related to ##A_x## and ##A_y##. Imagine that the block...

If a mole is Avogadro's number, what is a guacamole?

In addition to what @TSny has suggested, you could try this... Let ##A_x## and ##A_y## be the horizontal and vertical components of M’s...

Aagh. Misread the question. Post struck-through.

Why? Nothing moves faster than 1 km/s here.

Of course, relativistic effects need to be accounted.... Edit - please ignore. misread question.

In the connected situation (S1 and S2 joined) condition 1 applies: Torque (S1) = Torque(S2) = 0 If any object - even if it is part of...

You are comparing two different systems – not two versions of the same system. So your comparison isn’t valid. I'll try to explain why...

Here in the UK, building insurance often excludes cover for damage caused by infinite forces. For this reason, all our builders and...

Not quite. The equation says that you need an infinite force to open a door if you push at the hinge. When the location of the hinge is...

A couple of thoughts... No. If a ’subsystem’ had non-zero torque, then it would have some angular acceleration. @anuttarasammyak, you...

It's also useful for expressing general solutions, where a quantity can have either direction, depending on some free parameters.The...