00:01
Hello everyone, in this question we are given with three different forces that are acting on a block, single block.
00:06
So here the value of first force, f1 vector, is given as 5i -cap, the second force which is f2 vector is given as minus 4 j -cap, and at last the third vector, f3 vector, is given in the question as 2 i -cap minus 9 j -cap.
00:22
Now, these three forces are acting on a single block and the mass of the block is given as 20 kg, and we have to find out, magnitude of acceleration of the block.
00:33
Okay, so first thing, the net force is coming out as the sum of all these three forces, that means f1 vector plus f2 vector plus f3 vector, and that is coming out as 5 plus 2 which is 7 i cap minus 13 j cap.
00:48
So let us calculate the magnitude of net force.
00:52
So magnitude of net force is coming out as root over 7 square which is 49 plus minus 13 square which is 169...