Steve4Physics's latest activity
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SSteve4Physics replied to the thread A very simple moments question.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...
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SSteve4Physics replied to the thread A very simple moments question.Here in the UK, building insurance often excludes cover for damage caused by infinite forces. For this reason, all our builders and...
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SNot 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...
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SSteve4Physics replied to the thread A very simple moments question.A couple of thoughts... No. If a ’subsystem’ had non-zero torque, then it would have some angular acceleration. @anuttarasammyak, you...
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SIt's also useful for expressing general solutions, where a quantity can have either direction, depending on some free parameters.The...
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SSteve4Physics replied to the thread A very simple moments question.To add to what’s already been said, you are correct but it doesn't matter. If you calculate ##F_y## you will get a negative value. You...
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SSteve4Physics replied to the thread A very simple moments question.It might help to remember that there are two types of equilibrium – translational and rotational. In this question, in the horizontal...
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SSteve4Physics reacted to Herman Trivilino's post in the thread A very simple moments question with
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It's an equilibrium situation so all the forces are "balanced" by other forces. That's what it means to have a net force of zero. Do... -
SSteve4Physics replied to the thread A very simple moments question.Pre-retirement I marked physics exam' papers for Edexcel (and for others). Occasionally examination questions are found to be...
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SSteve4Physics replied to the thread Sliding block hits and compresses a spring.It might just be a not-that-great description (notably lacking commas!). The OP wrote: The intended meaning may be this (with block...
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SSteve4Physics replied to the thread Sliding block hits and compresses a spring.That's OK. But note that the data in the question are supplied to only one significant figure. Technically it would be best if your...
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SSteve4Physics replied to the thread Finding proper value for centripetal acceleration in a plane rising up.@aadityav, to clarify your teacher’s intent, you could ask them this: Planet A has a surface gravitational field strength of 51...
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SIf a veridical paradox were not a paradox, would that itself be a veridical paradox?
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SA veridical paradox is one of three types of paradoxes, which is what defines it as a paradox.
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SSteve4Physics replied to the thread Slipping/Rolling Motion on Inclined Plane.I guess you meant to say something like "if the cylinder's initial angular speed = 0 and it then rolls without slipping". Not quite...
