Question 6 please [Himachal ['91 (An:,_
18 J)
5, Find the work done by force F 2i — 3 j k when
its point of application moves from the point
(l, 2, — 3) to the point B g, O, — 5). (Ans. 6 units)
A particle is acted upon by constant forces
z-i+2j-3k, is dis-
2i — 3j 4k and F2
placed from the point A (2, 1, 0) to the point
3, —4, 2). Find the total work done by these
(Ans. 2 units)
. A man weighing 50 kg f supports a body of 25 kg f
on his head. What is the work done when he moves
Area =
a distance of 20 m up an incline of 1 in 10 ? Take mg. 6.7 Calculation of work
F (x) in moving a bl
(Ans. 1470 J)
9.8 ms-
