00:02
Here we have an illustration of a block salining down an inclined plane where we have some friction.
00:08
And we want to find the following quantities.
00:11
First, we want to find the angle of our incline, given the height and distance d of our plane.
00:22
So we have that the tangent of theta is equal to h over d, the opposite length over the adjacent length, where h is equal to 5 meters and d is equal to 15 meters.
00:46
So we have that the tangent of theta is equal to 5 over 15, or 1 third.
01:13
Yielding an angle of 0 .32 rad, or once converted to degrees, we obtain 18 .43 degrees.
01:35
Next, we want to find the weight of our block.
01:42
So the weight is given by mg, where g is the gravitational acceleration.
01:48
So we know g is equal to 9 .1, and m, the mass of our block, is equal to h plus d over 2.
01:57
So let's just calculate this...