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Home » There are three forces F1, F2, and F3 acting on a body, all acting on a point P on the body. The body is found to move with uniform speed. a) show that the forces are coplanar b) show that the torque acting on the body about any point due to these three forces is zero
There are three forces F1, F2, and F3 acting on a body, all acting on a point P on the body. The body is found to move with uniform speed. a) show that the forces are coplanar b) show that the torque acting on the body about any point due to these three forces is zero
CBSE | Class 11 | Laws of Motion | ncert exemplar | Physics
There are three forces F1, F2, and F3 acting on a body, all acting on a point P on the body. The body is found to move with uniform speed. a) show that the forces are coplanar b) show that the torque acting on the body about any point due to these three forces is zero

a) The body’s acceleration is zero because the resultant force of the three forces F1, F2, and F3 on a location on the body is zero. The directions of forces F1 and F2 are in the plane of the paper, and their sum is in the same plane but in the opposite direction. F3 is also on the same plane. As a result, all three forces are parallel.

b) The torque is also zero since the resultant of forces F1, F2, and F3 is zero. In other words, the resulting force is:

F = F1 + F2 + F3 = 0.

As a result, at any moment in time, the torque acting will be zero.

i

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