QBManager

Motion in Plane

269845 A particle is moving along a circular path with uniform speed. Through what angle does its angular velocity change when it completes half of the circularpath ?

1 \(0^{0}\)

2 \(45^{\circ}\)

3 \(180^{\circ}\)

4 \(360^{\circ}\)

Motion in Plane

269846 A car of mass\(m\) moves in a horizontal circular path of radius \(r\) metre. At an instant its speed is \(V \mathrm{~m} / \mathrm{s}\) and is increasing at a rate of \(\mathrm{am} / \mathrm{sec}^{2}\). then the acceleration of the car is

1 \(\frac{V^{2}}{r}\)

2 \(a\)

3 \(\sqrt{a^{2}+\frac{\square v^{2} \square^{\square}}{\square r}}\)

4 \(\sqrt{a+\frac{V^{2}}{r}}\)

Motion in Plane

269847 Consider the following two statements\(A\) and \(B\) and identify the correct choice
A)When a rigid body is rotating about its own axis, at a given instant all particles of body possess same angular velocity.
B)When a rigid body is rotating about its own axis, the linear velocity of a particle is directly proportional to its perpendicular distance from axis

1 \(A\) is true but \(B\) is false

2 \(A\) is false but \(B\) is true

3 Both\(A\) and \(B\) are true

4 Both\(A\) and \(B\) are false

Motion in Plane

269848 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 It's angular velocity vector will be perpendicular to the page pointing up out of the page

2 It's angular velocity vector will be perpendicular to the page pointing in wards

3 It's angular velocity vector acts along the tangent to the disc.

4 none of the above is correct
Answer 31 to 33 based on following information \(\vec{A}, \vec{B}, \vec{C}, \vec{D}, \vec{E}\) and \(\vec{F}\) are coplanar vectors having the same magnitude each of 10 units and angle between successive vectors is \(60^{\circ}\)

Motion in Plane

269845 A particle is moving along a circular path with uniform speed. Through what angle does its angular velocity change when it completes half of the circularpath ?

1 \(0^{0}\)

2 \(45^{\circ}\)

3 \(180^{\circ}\)

4 \(360^{\circ}\)

Motion in Plane

269846 A car of mass\(m\) moves in a horizontal circular path of radius \(r\) metre. At an instant its speed is \(V \mathrm{~m} / \mathrm{s}\) and is increasing at a rate of \(\mathrm{am} / \mathrm{sec}^{2}\). then the acceleration of the car is

1 \(\frac{V^{2}}{r}\)

2 \(a\)

3 \(\sqrt{a^{2}+\frac{\square v^{2} \square^{\square}}{\square r}}\)

4 \(\sqrt{a+\frac{V^{2}}{r}}\)

Motion in Plane

269847 Consider the following two statements\(A\) and \(B\) and identify the correct choice
A)When a rigid body is rotating about its own axis, at a given instant all particles of body possess same angular velocity.
B)When a rigid body is rotating about its own axis, the linear velocity of a particle is directly proportional to its perpendicular distance from axis

1 \(A\) is true but \(B\) is false

2 \(A\) is false but \(B\) is true

3 Both\(A\) and \(B\) are true

4 Both\(A\) and \(B\) are false

Motion in Plane

269848 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 It's angular velocity vector will be perpendicular to the page pointing up out of the page

2 It's angular velocity vector will be perpendicular to the page pointing in wards

3 It's angular velocity vector acts along the tangent to the disc.

4 none of the above is correct
Answer 31 to 33 based on following information \(\vec{A}, \vec{B}, \vec{C}, \vec{D}, \vec{E}\) and \(\vec{F}\) are coplanar vectors having the same magnitude each of 10 units and angle between successive vectors is \(60^{\circ}\)

Motion in Plane

269845 A particle is moving along a circular path with uniform speed. Through what angle does its angular velocity change when it completes half of the circularpath ?

1 \(0^{0}\)

2 \(45^{\circ}\)

3 \(180^{\circ}\)

4 \(360^{\circ}\)

Motion in Plane

269846 A car of mass\(m\) moves in a horizontal circular path of radius \(r\) metre. At an instant its speed is \(V \mathrm{~m} / \mathrm{s}\) and is increasing at a rate of \(\mathrm{am} / \mathrm{sec}^{2}\). then the acceleration of the car is

1 \(\frac{V^{2}}{r}\)

2 \(a\)

3 \(\sqrt{a^{2}+\frac{\square v^{2} \square^{\square}}{\square r}}\)

4 \(\sqrt{a+\frac{V^{2}}{r}}\)

Motion in Plane

269847 Consider the following two statements\(A\) and \(B\) and identify the correct choice
A)When a rigid body is rotating about its own axis, at a given instant all particles of body possess same angular velocity.
B)When a rigid body is rotating about its own axis, the linear velocity of a particle is directly proportional to its perpendicular distance from axis

1 \(A\) is true but \(B\) is false

2 \(A\) is false but \(B\) is true

3 Both\(A\) and \(B\) are true

4 Both\(A\) and \(B\) are false

Motion in Plane

269848 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 It's angular velocity vector will be perpendicular to the page pointing up out of the page

2 It's angular velocity vector will be perpendicular to the page pointing in wards

3 It's angular velocity vector acts along the tangent to the disc.

4 none of the above is correct
Answer 31 to 33 based on following information \(\vec{A}, \vec{B}, \vec{C}, \vec{D}, \vec{E}\) and \(\vec{F}\) are coplanar vectors having the same magnitude each of 10 units and angle between successive vectors is \(60^{\circ}\)

Motion in Plane

269845 A particle is moving along a circular path with uniform speed. Through what angle does its angular velocity change when it completes half of the circularpath ?

1 \(0^{0}\)

2 \(45^{\circ}\)

3 \(180^{\circ}\)

4 \(360^{\circ}\)

Motion in Plane

269846 A car of mass\(m\) moves in a horizontal circular path of radius \(r\) metre. At an instant its speed is \(V \mathrm{~m} / \mathrm{s}\) and is increasing at a rate of \(\mathrm{am} / \mathrm{sec}^{2}\). then the acceleration of the car is

1 \(\frac{V^{2}}{r}\)

2 \(a\)

3 \(\sqrt{a^{2}+\frac{\square v^{2} \square^{\square}}{\square r}}\)

4 \(\sqrt{a+\frac{V^{2}}{r}}\)

Motion in Plane

269847 Consider the following two statements\(A\) and \(B\) and identify the correct choice
A)When a rigid body is rotating about its own axis, at a given instant all particles of body possess same angular velocity.
B)When a rigid body is rotating about its own axis, the linear velocity of a particle is directly proportional to its perpendicular distance from axis

1 \(A\) is true but \(B\) is false

2 \(A\) is false but \(B\) is true

3 Both\(A\) and \(B\) are true

4 Both\(A\) and \(B\) are false

Motion in Plane

269848 Suppose a disc is rotating counter clockwise in the plane of the paper then

1 It's angular velocity vector will be perpendicular to the page pointing up out of the page

2 It's angular velocity vector will be perpendicular to the page pointing in wards

3 It's angular velocity vector acts along the tangent to the disc.

4 none of the above is correct
Answer 31 to 33 based on following information \(\vec{A}, \vec{B}, \vec{C}, \vec{D}, \vec{E}\) and \(\vec{F}\) are coplanar vectors having the same magnitude each of 10 units and angle between successive vectors is \(60^{\circ}\)

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