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Laws of Motion

270130 A block \(X\) kept on an inclined surface just begins to slide if the inclination is \(\theta_{1}\). The block is replaced by another block \(Y\) and it is found that it just begins to slide if the inclination is \(\theta_{2}\left(\theta_{2}\lt \theta_{1}\right)\). Then

1 Mass of \(X=\) mass of \(Y\)
2 Mass of \(X<\) mass of \(Y\)
3 Mass of \(X\lt \) mass of \(Y\)
4 All the three are possible
Laws of Motion

270131 A Particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that

1 the Kinetic energy of the particle changes with time.
2 the acceleration of the particle is constant.
3 the velocity of the particle is constant
4 the speed of the particle is constant
Laws of Motion

270132 The direction of angular acceleration of a body moving in a circle in the plane of the paper is

1 along the tangent
2 along the radius inward
3 along the radius outward
4 perpendicular to the plane of the paper
Laws of Motion

270133 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 Its angular velocity vector will be perpendicular to the page pointing up out of the page
2 Its angular velocity vector will be perpendicular to the page pointing inwards
3 Its angular velocity vector acts along the tangent to the disc
4 None of the above
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Laws of Motion

270130 A block \(X\) kept on an inclined surface just begins to slide if the inclination is \(\theta_{1}\). The block is replaced by another block \(Y\) and it is found that it just begins to slide if the inclination is \(\theta_{2}\left(\theta_{2}\lt \theta_{1}\right)\). Then

1 Mass of \(X=\) mass of \(Y\)
2 Mass of \(X<\) mass of \(Y\)
3 Mass of \(X\lt \) mass of \(Y\)
4 All the three are possible
Laws of Motion

270131 A Particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that

1 the Kinetic energy of the particle changes with time.
2 the acceleration of the particle is constant.
3 the velocity of the particle is constant
4 the speed of the particle is constant
Laws of Motion

270132 The direction of angular acceleration of a body moving in a circle in the plane of the paper is

1 along the tangent
2 along the radius inward
3 along the radius outward
4 perpendicular to the plane of the paper
Laws of Motion

270133 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 Its angular velocity vector will be perpendicular to the page pointing up out of the page
2 Its angular velocity vector will be perpendicular to the page pointing inwards
3 Its angular velocity vector acts along the tangent to the disc
4 None of the above
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Laws of Motion

270130 A block \(X\) kept on an inclined surface just begins to slide if the inclination is \(\theta_{1}\). The block is replaced by another block \(Y\) and it is found that it just begins to slide if the inclination is \(\theta_{2}\left(\theta_{2}\lt \theta_{1}\right)\). Then

1 Mass of \(X=\) mass of \(Y\)
2 Mass of \(X<\) mass of \(Y\)
3 Mass of \(X\lt \) mass of \(Y\)
4 All the three are possible
Laws of Motion

270131 A Particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that

1 the Kinetic energy of the particle changes with time.
2 the acceleration of the particle is constant.
3 the velocity of the particle is constant
4 the speed of the particle is constant
Laws of Motion

270132 The direction of angular acceleration of a body moving in a circle in the plane of the paper is

1 along the tangent
2 along the radius inward
3 along the radius outward
4 perpendicular to the plane of the paper
Laws of Motion

270133 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 Its angular velocity vector will be perpendicular to the page pointing up out of the page
2 Its angular velocity vector will be perpendicular to the page pointing inwards
3 Its angular velocity vector acts along the tangent to the disc
4 None of the above
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Laws of Motion

270130 A block \(X\) kept on an inclined surface just begins to slide if the inclination is \(\theta_{1}\). The block is replaced by another block \(Y\) and it is found that it just begins to slide if the inclination is \(\theta_{2}\left(\theta_{2}\lt \theta_{1}\right)\). Then

1 Mass of \(X=\) mass of \(Y\)
2 Mass of \(X<\) mass of \(Y\)
3 Mass of \(X\lt \) mass of \(Y\)
4 All the three are possible
Laws of Motion

270131 A Particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that

1 the Kinetic energy of the particle changes with time.
2 the acceleration of the particle is constant.
3 the velocity of the particle is constant
4 the speed of the particle is constant
Laws of Motion

270132 The direction of angular acceleration of a body moving in a circle in the plane of the paper is

1 along the tangent
2 along the radius inward
3 along the radius outward
4 perpendicular to the plane of the paper
Laws of Motion

270133 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 Its angular velocity vector will be perpendicular to the page pointing up out of the page
2 Its angular velocity vector will be perpendicular to the page pointing inwards
3 Its angular velocity vector acts along the tangent to the disc
4 None of the above
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