abt 4:20 ...you can use the angle phi to compute torque, but you would use cosine phi when calculating the component of the weight force that is perpendicular to the lever arm ... i.e. mgcosPhi
Hi physics ninja! Any ways you could do some gravitational field strength questions? Especially finding the altitude above the earth etc?? Keep up the great work btw!
I tried to calculate how much time it took for the ruler to fall on the ground at angle theta. And I got to the differential equation. Angular acceleration is equal to some constant times cos(theta). In other words, f’’(t)=C*cos(f). This differential equation is impossible? With some error in mind, I made angle small enough that cos(f) is essentialy 1. Then it can be deduced that f(t)=C^2/2. And when f=theta. We have the formula for time, but this is still approximation. How would you deal with this problem, finding exactly the solution of this dif equation?
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Better explained than my physics professor, thank you
you have no idea how long i was searching for this types of questions thank you!❤
abt 4:20 ...you can use the angle phi to compute torque, but you would use cosine phi when calculating the component of the weight force that is perpendicular to the lever arm ... i.e. mgcosPhi
Hi physics ninja! Any ways you could do some gravitational field strength questions? Especially finding the altitude above the earth etc?? Keep up the great work btw!
Great suggestion!
What if we wanted to calculate the angular velocity in a specific moment? For example in t= 0,5 second? What equation should we use?
I tried to calculate how much time it took for the ruler to fall on the ground at angle theta. And I got to the differential equation. Angular acceleration is equal to some constant times cos(theta). In other words, f’’(t)=C*cos(f). This differential equation is impossible? With some error in mind, I made angle small enough that cos(f) is essentialy 1. Then it can be deduced that f(t)=C^2/2. And when f=theta. We have the formula for time, but this is still approximation. How would you deal with this problem, finding exactly the solution of this dif equation?
why the work done by torque not considered, thanks