The torque on a body about a given point is found to be equal to where is a constant vector, and is the angular momentum of the body about that point. From this it follows that

a)

is perpendicular to at all instants of time

b)

The component of in the direction of does not change with time

c)

The magnitude of does not change with time

d)

does not change with time

Question ID - 100659 :-

The torque on a body about a given point is found to be equal to where is a constant vector, and is the angular momentum of the body about that point. From this it follows that

a)

is perpendicular to at all instants of time

b)

The component of in the direction of does not change with time

c)

The magnitude of does not change with time

d)

does not change with time

1 Answer

5876 Votes

3537

Answer Key : (a,b,c) -

(a,b,c)

Given that

From the cross-product rule, is always perpendicular to the plane containing and . By the dot product definition,

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