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Third Law of Motion

Moment of a f...

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Moment of a force of magnitude 20N acting along position x direction at 3m,0,0 about the point 0,2,0 is?

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Q. Moment of a force of magnitude

20 N

acting along positive

x

direction at point

(3 m, 0, 0)

about the point

(0, 2, 0) (i n N m)

Q. A force of magnitude

6

in the direction of the vector

\to i - 2 \to j + 2 \to k

acts at the point whose position vector is

\to i - \to j

. A second force acting at the point with position vector

\to j - \to k

forms a couple with the first force. Find the vector moment of the couple.

Q. Ab electron moving with a velocity of

4 \times 10^{- 5} m

s^{- 1}

along the positive x direction experiences a force of magnitude

3.2 \times 10^{- 20} N

R

. Find the value of

I

Q. In the XOY coordinate plane P(a, a) is a point. Two forces each of magnitude F are acting at P in the positive X-direction and positive Y-direction. The magnitude of the torque due to the forces about the origin is

Q. Two forces each of 20N act on a body at 120

^{0}

.The magnitude and direction of the resultant is:

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