Torque and Angular Momentum
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366131 A metre stick is balanced on a knife edge at its centre. When two coins, each of mass \(5\;g\) are put one on the other at the \(12\;\,cm\) mark, the stick is found to balance at \(45\;\,cm\). The mass of the metre stick is

1 \(76\;g\)
2 \(36\;g\)
3 \(78\,g\)
4 \(66\;\,g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366132 In the given figure, a uniform plank of length \(6\,m\) and weight \(200\,N\) rests horizontally on two supports, with \(1\,m\) of the plank hanging over the right support. To what distance \({x}\) (in \({m}\)) can a person who weighs \(800\,N\) walk on the overhanging part of the plank before it just begins to tip?
supporting img

1 1
2 5
3 \(0.50\)
4 7
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366133 A rod of mass \(m\) and length \(l\) hinged in a vertical wall and kept horizontal by massless vertical thread as shown. Tension in thread is
supporting img

1 \(m g\)
2 \(\dfrac{m g}{2}\)
3 \(\dfrac{3 m g}{2}\)
4 \(2 m g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366134 A heavy iron bar, of weight \(W\) is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle \(\theta\) with the horizontal. The weight experienced by the person is ____ .

1 \(\dfrac{W}{2}\)
2 \(W \sin \theta\)
3 \(W\)
4 \(W \cos \theta\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366135 Assertion :
A ladder is more likely to slip when a person is near the top than when he is near the bottom.
Reason :
The friction between the ladder and floor decreases as he climbs up.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366131 A metre stick is balanced on a knife edge at its centre. When two coins, each of mass \(5\;g\) are put one on the other at the \(12\;\,cm\) mark, the stick is found to balance at \(45\;\,cm\). The mass of the metre stick is

1 \(76\;g\)
2 \(36\;g\)
3 \(78\,g\)
4 \(66\;\,g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366132 In the given figure, a uniform plank of length \(6\,m\) and weight \(200\,N\) rests horizontally on two supports, with \(1\,m\) of the plank hanging over the right support. To what distance \({x}\) (in \({m}\)) can a person who weighs \(800\,N\) walk on the overhanging part of the plank before it just begins to tip?
supporting img

1 1
2 5
3 \(0.50\)
4 7
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366133 A rod of mass \(m\) and length \(l\) hinged in a vertical wall and kept horizontal by massless vertical thread as shown. Tension in thread is
supporting img

1 \(m g\)
2 \(\dfrac{m g}{2}\)
3 \(\dfrac{3 m g}{2}\)
4 \(2 m g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366134 A heavy iron bar, of weight \(W\) is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle \(\theta\) with the horizontal. The weight experienced by the person is ____ .

1 \(\dfrac{W}{2}\)
2 \(W \sin \theta\)
3 \(W\)
4 \(W \cos \theta\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366135 Assertion :
A ladder is more likely to slip when a person is near the top than when he is near the bottom.
Reason :
The friction between the ladder and floor decreases as he climbs up.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366131 A metre stick is balanced on a knife edge at its centre. When two coins, each of mass \(5\;g\) are put one on the other at the \(12\;\,cm\) mark, the stick is found to balance at \(45\;\,cm\). The mass of the metre stick is

1 \(76\;g\)
2 \(36\;g\)
3 \(78\,g\)
4 \(66\;\,g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366132 In the given figure, a uniform plank of length \(6\,m\) and weight \(200\,N\) rests horizontally on two supports, with \(1\,m\) of the plank hanging over the right support. To what distance \({x}\) (in \({m}\)) can a person who weighs \(800\,N\) walk on the overhanging part of the plank before it just begins to tip?
supporting img

1 1
2 5
3 \(0.50\)
4 7
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366133 A rod of mass \(m\) and length \(l\) hinged in a vertical wall and kept horizontal by massless vertical thread as shown. Tension in thread is
supporting img

1 \(m g\)
2 \(\dfrac{m g}{2}\)
3 \(\dfrac{3 m g}{2}\)
4 \(2 m g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366134 A heavy iron bar, of weight \(W\) is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle \(\theta\) with the horizontal. The weight experienced by the person is ____ .

1 \(\dfrac{W}{2}\)
2 \(W \sin \theta\)
3 \(W\)
4 \(W \cos \theta\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366135 Assertion :
A ladder is more likely to slip when a person is near the top than when he is near the bottom.
Reason :
The friction between the ladder and floor decreases as he climbs up.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366131 A metre stick is balanced on a knife edge at its centre. When two coins, each of mass \(5\;g\) are put one on the other at the \(12\;\,cm\) mark, the stick is found to balance at \(45\;\,cm\). The mass of the metre stick is

1 \(76\;g\)
2 \(36\;g\)
3 \(78\,g\)
4 \(66\;\,g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366132 In the given figure, a uniform plank of length \(6\,m\) and weight \(200\,N\) rests horizontally on two supports, with \(1\,m\) of the plank hanging over the right support. To what distance \({x}\) (in \({m}\)) can a person who weighs \(800\,N\) walk on the overhanging part of the plank before it just begins to tip?
supporting img

1 1
2 5
3 \(0.50\)
4 7
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366133 A rod of mass \(m\) and length \(l\) hinged in a vertical wall and kept horizontal by massless vertical thread as shown. Tension in thread is
supporting img

1 \(m g\)
2 \(\dfrac{m g}{2}\)
3 \(\dfrac{3 m g}{2}\)
4 \(2 m g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366134 A heavy iron bar, of weight \(W\) is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle \(\theta\) with the horizontal. The weight experienced by the person is ____ .

1 \(\dfrac{W}{2}\)
2 \(W \sin \theta\)
3 \(W\)
4 \(W \cos \theta\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366135 Assertion :
A ladder is more likely to slip when a person is near the top than when he is near the bottom.
Reason :
The friction between the ladder and floor decreases as he climbs up.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366131 A metre stick is balanced on a knife edge at its centre. When two coins, each of mass \(5\;g\) are put one on the other at the \(12\;\,cm\) mark, the stick is found to balance at \(45\;\,cm\). The mass of the metre stick is

1 \(76\;g\)
2 \(36\;g\)
3 \(78\,g\)
4 \(66\;\,g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366132 In the given figure, a uniform plank of length \(6\,m\) and weight \(200\,N\) rests horizontally on two supports, with \(1\,m\) of the plank hanging over the right support. To what distance \({x}\) (in \({m}\)) can a person who weighs \(800\,N\) walk on the overhanging part of the plank before it just begins to tip?
supporting img

1 1
2 5
3 \(0.50\)
4 7
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366133 A rod of mass \(m\) and length \(l\) hinged in a vertical wall and kept horizontal by massless vertical thread as shown. Tension in thread is
supporting img

1 \(m g\)
2 \(\dfrac{m g}{2}\)
3 \(\dfrac{3 m g}{2}\)
4 \(2 m g\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366134 A heavy iron bar, of weight \(W\) is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle \(\theta\) with the horizontal. The weight experienced by the person is ____ .

1 \(\dfrac{W}{2}\)
2 \(W \sin \theta\)
3 \(W\)
4 \(W \cos \theta\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366135 Assertion :
A ladder is more likely to slip when a person is near the top than when he is near the bottom.
Reason :
The friction between the ladder and floor decreases as he climbs up.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.