Physics 15 Torque Fundamentals (8 of 13) How to Calculate a Torque (Basic Example 2)

In this video I will calculate the torque of a crane of L=2m supporting a mass=10kg at an angle=30 degrees.

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[samuellazcano]

I just forgot all this things over the years, I just find it very helpful and refreshing. I came out to tis video because I wanted to find a servo to create a pan and tilt for my camera that weights around 10KG.Anyway good lecture

[anime--A]

Sir how about the other formula F*l*sin(a)

[juliahamblin]

Hi, I was wondering why the weight of the beam isn't taken into account

[prathikkannan]

Isn’t the torque caused by the tension in the string rather than the weight of the block? If we are using the weight of the block as the force, we would have to assume there is a force at the pivot point causing no motion correct?

[गणेशफडतरे]

Sir whats that ans means 98 N.m,
is it mean that, the beam will rotate to 1 meter distance by giving 98 N torque.
Is this correct sir ?

[danidx]

can one use the perpendicular force instead of the perpendicular radius?

[samuellazcano]

how did you come out with 98? just the multiplication 10*9.8 is 98, what happen with the 2* cos 60deg? i don't get it?

[ooiowen]

sir, if the tension is equal to the weight of the mass, then the linear acceleration should be 0 right ? If linear acceleration is equal to 0, then the angular acceleration is also equal to zero as a=r*alpha causing the torque to be 0 also ? I'm a bit confused about it...

[rebekahb]

Is there also a tension force in the cable to account for here?

[paragbari]

What if my angle is 90deg. Becouse cos 90 is zero..

[dineshtech]

I am making robotics arm
Please sir give me some idea