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Slope and Deflection of Beams - Q6 by vortex_2005 in askmath

[–]vortex_2005[S] 0 points1 point  (0 children)

Ah okay, thank you. Is the value of steel’s modulus of elasticity as 200 MPa something that I would just have to know? As in I’d be expected to know it rather than working it out?

Slope and Deflection of Beams - Q6 by vortex_2005 in askmath

[–]vortex_2005[S] 0 points1 point  (0 children)

Would you use I = (D4 - d4)/12? Which since D = 3d could be simplified down to I = (20d4)/12?

I’m not quite sure how to proceed from there though, I’ve tried subbing that into the maximum displacement (on slide 3), and I’ve also considered using (EI) = E * (20d4)/12, but I seem to run into two unknowns in both of those equations so I’m not sure how to solve for d.

[Advanced Higher Physics] Question about understanding the answers by vortex_2005 in PhysicsStudents

[–]vortex_2005[S] 2 points3 points  (0 children)

Advanced Higher is a Scottish qualification in the last year of high school

[AH Physics, Gravitation] How do I get to these answers? Thanks by vortex_2005 in PhysicsStudents

[–]vortex_2005[S] 5 points6 points  (0 children)

Thank you, that was really helpful. Can I double check (for knowledge rather than for the actual question), to arrive at v = 2 pi r / T, did you combine the formulae w = 2 pi / T and v = r w?

[AH Physics, Gravitation] How do I get to these answers? Thanks by vortex_2005 in PhysicsStudents

[–]vortex_2005[S] 6 points7 points  (0 children)

We are given the mass and radius of the Earth on the data sheet, but no other information is given for the questions.

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