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qUESTIONS

Two forces 3N and 2 N are at an angle θ such that the resultant is R. The first force is now increased to 6N and the resultant become 2R. The value of θ is

A plane is revolving around the earth with a speed of 100 km/hr at a constant height from the surface of earth. The change in the velocity as it travels half circle is

The resultant of P̅ and Q̅ is perpendicular to P̅. What is the angle between P̅ and Q̅

The resultant of two vectors A and B is perpendicular to the vector A and its magnitude is equal to half the magnitude of vector B. The angle between A and B is

If vectors P, Q and R have magnitude 5, 12 and 13 units and P̅ + Q̅ = R̅, the angle between Q and R is

The sum of two forces acting at a point is 16 N. If the resultant force is 8 N and its direction is perpendicular to minimum force then the forces are

The three vectors Ā = 3î – 2ĵ + 1k̂, B̅ = 1î – 3ĵ + 5k̂ and C̄ = 2î + 1ĵ – 4k̂ form

Two forces, each of magnitude F have a resultant of the same magnitude F. The angle between the two forces is

The position vector of a particle is determined by the expression r̄ = 3t²î+4r²ĵ+7k̂ The distance traversed in first 10 sec is

An object of m kg with speed of v m/s strikes a wall at an angle and rebounds at the same speed and same angle. The magnitude of the change in momentum of the object will be

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