00:01
Hello friend as shown in the figure there is space probe having the weight 3 ,000 pounds and radius of variation kx k y k j is given 1 .375 foot 1 .4 5 foot 1 .2 50 feet a meteorite moving with velocity 2400 feet per second i cap minus 3 ,000 feet per second j cap and 3200 feet j -cap strikes to the probe at a point.
00:37
Its mass is given by the o's, knowing the meteorite emerges on the other side of the panel with no change in direction of its velocity, but with speed reduced by 20 percent, we have to find the kinetic energy of the space probe after the impact.
00:58
Let us start solving it.
01:05
Mass of space probe m -des, weight divided by g weight is given 3 ,000 pounds, 32 .2 so it will be 93 .17 selects mass of meteorite m 5 upon 16 into that is 0 .009705 selects point of impact having the position vector are a 9 i cap plus 0 .75 j -cap fit.
02:31
So linear momentum, initial of the metroid.
02:36
So initial linear momentum, meteorite mv0, m is 0 .009075 into velocity.
03:21
Vacity is given 2400 icap, 3000j cap.
03:41
So initial momentum mb not having the value 23 .292 i cap 29 .25 j cap 31 .05 j cap 31 .05 6k cap selects fifth per second.
04:14
Now initial moment about the origin r a cross mb not you may write i cap j cap, j cap, k -capped, this is origin, sorry, substitute the value 9 .750, 23 .292 minus 29115, 31 .31 .56...