Recent content by inv

1. When calculating a car's acceleration, is it ok to substitute Torque into a= F/ma= F/m T= FrF= T/rwhere a= acceleration, F= force, m= mass, T= Torque, r= radius,a= T/rm ?

So the force vector on the block's perpendicular to the red dot? If I'm correct, if a force is applied on an object's centre of gravity( generally center of mass), it will displace; Elsewhere, it'll turn. Are you using the right angle triangle Sin Y°= Opposite/ Hypothenus formula? But is the...

Another thinner block of wood screwed to the machine arm, as shown. It has to be attached to something at its end, so yes. I think there's no difference to the perpendicular force vector to the arm, what do you mean, maybe a picture can explain better?

Sry typo, there're no levers in this question, all levers typed here were supposed to be pulleys, edited the picture w/ the question.

No, the question is simply "Did the block of wood successfully act as a lever directing the force perpendicular to the arm of the machine, as the red arrow indicates?".

No, my friction comment was just a trivia, the question is only as in the picture.

What's **-1? Yes, complete. There's no aim, it's just an exercise to test lever and force vector knowledge.

I'd like to ask the question as above, I think it successfully acted as a lever and redirected the force vector perpendicular to the arm of the machine, but it does've > friction, reducing the force acting on the 10kg Weight, could anyone that knows pls help check for me?*Edit, ... I think it...

A) Questions, Equations & Attempts on answering 1) If I'm correct, for linear cases, Work= Fs, F= Constant Force s= Displacement where Work can= negative if displacement ends up in the opposite direction, am I right? 2) Rotational Work= Fs =...

Hey thanks a bunch!Solved!**

Well I've drawn my amplitude all above x-axis as the E_{p} starts from 0-origin,then increases to max then back to zero again,forming a sinusoidal wave type pattern.The graph requested didn't put a requirement to be exact in amplitude.How different u mean?

Homework Statement Hi,the question is draw a graph of E_{p} against t/s of the oscillating motion above,I've done it and have no exact answer in my hand,hoping some ppl to double check my answer that's all.My answer is here below Homework Equations E_{p}=mgh , where E_{p} is potential...

[SIZE="7"]Solved*!Tq for answering!

Homework Statement Two markers M1 & M2're set up a vertical distance h apart. When a steel ball is released from rest from a pt a distance x above M1,it's found that the ball takes time t1 to reach M1 and time t2 to reach M2. Which expression gives the acceleration of the ball...

I've redone the stuff u said,also added 1 more question needing to be answered,should be easy for pros out there.Pls do me a favour which is answering it?!