Let F = 2 i − 3 j + k act at the point ( 5 , 1 , 3 ) . (a) Find the torque of F about the point ( 4 , 1 , 0 ) . (b) Find the torque of F about the line r = 4 i + j + ( 2 i + j − 2 k ) t .
Let F = 2 i − 3 j + k act at the point ( 5 , 1 , 3 ) . (a) Find the torque of F about the point ( 4 , 1 , 0 ) . (b) Find the torque of F about the line r = 4 i + j + ( 2 i + j − 2 k ) t .
(14) The straight line L passes through the origin O and is in the
direction i+mj. The straight line L' passes through the point A
whose position vector is ai and is in the direction i+m'j. Write
down the vector equations of L and L' and find the position
vector of their point of intersection.
4) The force F = 2i-j-5k acts as the point (-5,2,1). Find the torque due
to F about the origin and about the line 2x = -4y = -Z.
rootor of
oving particle be:
A net is dipped in a river. Determine the
flow rate of water across the net if the
velocity vector field for the river is given
by v=(x-y,z+y+7,z2) and the net is
decribed by the equation y=1-x2-z2, y20,
and oriented in the positive y- direction.
(Use symbolic notation and fractions
where needed.)
Mathematics with Applications In the Management, Natural and Social Sciences (11th Edition)
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