00:01
For this problem, we have a bicep.
00:03
So we're just going to try to draw it.
00:05
The first part is when it is at a 90 degree angle.
00:08
And so we have an upward force of this muscle of 7 ,090 newtons.
00:14
And we're told it attaches to a point 5 centimeters from the axis.
00:20
And so we want to know what torque does this muscle provide when they are perpendicular to each other.
00:28
And so we know torque is equal to force.
00:31
Times perpendicular distance.
00:34
And in this case, it is 7 ,090 times 0 .05, because we have to convert that centimeters to meters.
00:43
And we do that by dividing by 100.
00:46
And so this gives us a torque of 354 .5 newton meters.
00:55
And so in the second part, now this arm is going to be lowered...