00:01
Let's discuss this question.
00:02
So here in this figure given below, we need to calculate the magnitude of the normant force between the box and the surface in each case when f is applied at an angle of 20 degree above the horizontal direction.
00:15
Secondly, when force is applied horizontally and thirdly when force is applied at the angle of 20 degrees below the horizontal direction.
00:23
So let's start here we can say for 2 .1, that is f.
00:32
Applied in vertical direction, this will be equal to f, a, b, a, b, sine, theta, pointing upwards.
00:50
So here we can say the net force, the net normal force between the box and the surface, acting upwards, that is equal to w minus f applied, that is, force applied sine theta is equal to 150 multiplied by 9 .8 minus 600 sine 20 degree and this will be equal to 1264 .7 .9 newton...