Recent content by Haveagoodday

Have somebody come to a solution for e)?

what are the values you put in?

did you use this equation Θf=Θi+ωi*t+0.5αt^2 ?

well it is kind of like this equation v= dx/dt, and if you rearrange it you get t=dx/dv, and same goes for rotational motion equation w=dθ/dt, at least i think so.

but i dont forget that you have to use radians instead of degrees. But still it is apparently wrong to use that equation.

you yes

you have to use this equation t= θf-θi/wf-wi and you also have to use radians instead of degrees.

yeah, i recalculated and got 0.785s.

in c i get 0.395s you are using the wrong value of l, you have to put in the total width of the door in the equation, it doesn't matter where she pushes the door, it only matters when calculating the torque.

Does that mean the torque of gravity is 0? Thank you for helping!

what angular a are you using?

q

In c i calculated the torque for gravitational force for the outer parts and the inner part.

Sorry i ment to write 4.812*10^-5 kg*m^2 in a