Recent content by einstein_a_go_go

I think so...also you will need the relationship between the tension in the string and the frequency of vibration

Also (slightly off the question, but relevant to pendulums), a pendulum only does small oscillations. 45 degrees is a bit large for the oscillations to be that of a pendulum (think how wide grandfather clocks are / aren't!)

Hmmmm... Might it help to consider the TOTAL MOMENTUM before the explosions and the TOTAL at the end bearing in mind the 'explosions' are internal to the system.

hi, I think you are making the situation too complicated. Problems can usually be solved EITHER by forces and accelerations OR by energy considerations. I think here you would be better off considering the initial kinetic energy and the work done against friction as the block slides. Cheers

For the free body diagram for m1, do you have a friction force on it? Otherwise sounds right...if I am reading it right

yes - from whence came your equation?

on the aimslin22 front: they travel up 4m and down 4m - so their overall displacement (Not distance) is...

Hi, if you forget 'THE equation' approach and think back to first principles. The whole journey takes 1.81 s. How long will the up part of the journey take? The vaulter starts at a speed v, vertically. At the peak of the vault what is their vertical speed? now, you should be able to work...

hi, Draw the diagram draw a free body diagram for each box (remember the tensions in each string may be different). If the strings are taut and unstretchable, what can you say about the accelerations of each body?Now you should have lots of equations! Solve!

Hi, where did you get a = v^2 / t ? v is a velocity in metres per second t is a time in seconds a is an acceleration in metres per second squared the dimensions (units) do not add up! Hope that helps cheers

I get the same as you

Hi, First: draw a diagram of the scene. Second: mark on all the forces using arrows Third resolve the forces either horizontally and vertically OR parallel and perpendicular to the slope Hope that gets you started. Cheers

Hi, "10/7 = A" 10 is a distance in metres 7 is a time in seconds so 10/7 is in metres per second. NOT an acceleration! Think about energy gains, not forces etc (i.e. not f=ma etc) Cheers

Are you sure k is correct? How did you find it? I have no calculator to hand (don't like the compueter one...and it's late, but I don't think 101.8 is correct, but I may be doing it wrong in my head - it is VERY late!) The mass hits the spring in equilibrium position and then comes to a stop...

always go for the simplet solution - imagine a vee shape. in the vee is a circle. this is an end on view