Work
PHXI06:WORK ENERGY AND POWER

355808 A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him?

1 Positive
2 Negative
3 Zero Said
4 Nothing can be
PHXI06:WORK ENERGY AND POWER

355809 The figure shows all the surfaces are frictionless and mass of the block,\(m = 1\,kg\). The block and wedge are held initially at rest. Now wedge is given a horizontal acceleartion of \(10\,m/{s^2}\) by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in \(\sqrt{3}\) seconds is
supporting img

1 \(100 \sqrt{3} J\)
2 \(30 J\)
3 \(150 \mathrm{~J}\)
4 \(60 \mathrm{~J}\)
PHXI06:WORK ENERGY AND POWER

355810 A force \(\vec{F}=k[y \hat{i}+x \hat{j}]\) where \(k\) is a positive constant acts on a particle moving in \(x\) - \(y\) plane starting from the point \((3,5)\), the particle is taken along a straight line to \((5,7)\). The work done by the force is:

1 15 \(K\)
2 Zero
3 35 \(K\)
4 20 \(K\)
PHXI06:WORK ENERGY AND POWER

355811 A particle moves under the effect of a force \(F=c x^{2}\) from \(x=0\) to \(x=x_{0}\). The work done in the process is

1 \(\dfrac{c x_{0}^{3}}{3}\)
2 \(c x_{0}^{2}\)
3 \(c x_{0}^{3}\)
4 \(\dfrac{c x_{0}^{3}}{2}\)
PHXI06:WORK ENERGY AND POWER

355812 The displacement \(x\) in metre of a particle of mass \(m\) \(kg\) moving in one dimension under the action of a force is related to the time \(t\) in second by the equation \(t=\sqrt{x}+3\), the work done by the force (in joule) in first six seconds is

1 \(9\;m/2\)
2 18 \(m\)
3 36 \(m\)
4 Zero
PHXI06:WORK ENERGY AND POWER

355808 A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him?

1 Positive
2 Negative
3 Zero Said
4 Nothing can be
PHXI06:WORK ENERGY AND POWER

355809 The figure shows all the surfaces are frictionless and mass of the block,\(m = 1\,kg\). The block and wedge are held initially at rest. Now wedge is given a horizontal acceleartion of \(10\,m/{s^2}\) by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in \(\sqrt{3}\) seconds is
supporting img

1 \(100 \sqrt{3} J\)
2 \(30 J\)
3 \(150 \mathrm{~J}\)
4 \(60 \mathrm{~J}\)
PHXI06:WORK ENERGY AND POWER

355810 A force \(\vec{F}=k[y \hat{i}+x \hat{j}]\) where \(k\) is a positive constant acts on a particle moving in \(x\) - \(y\) plane starting from the point \((3,5)\), the particle is taken along a straight line to \((5,7)\). The work done by the force is:

1 15 \(K\)
2 Zero
3 35 \(K\)
4 20 \(K\)
PHXI06:WORK ENERGY AND POWER

355811 A particle moves under the effect of a force \(F=c x^{2}\) from \(x=0\) to \(x=x_{0}\). The work done in the process is

1 \(\dfrac{c x_{0}^{3}}{3}\)
2 \(c x_{0}^{2}\)
3 \(c x_{0}^{3}\)
4 \(\dfrac{c x_{0}^{3}}{2}\)
PHXI06:WORK ENERGY AND POWER

355812 The displacement \(x\) in metre of a particle of mass \(m\) \(kg\) moving in one dimension under the action of a force is related to the time \(t\) in second by the equation \(t=\sqrt{x}+3\), the work done by the force (in joule) in first six seconds is

1 \(9\;m/2\)
2 18 \(m\)
3 36 \(m\)
4 Zero
PHXI06:WORK ENERGY AND POWER

355808 A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him?

1 Positive
2 Negative
3 Zero Said
4 Nothing can be
PHXI06:WORK ENERGY AND POWER

355809 The figure shows all the surfaces are frictionless and mass of the block,\(m = 1\,kg\). The block and wedge are held initially at rest. Now wedge is given a horizontal acceleartion of \(10\,m/{s^2}\) by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in \(\sqrt{3}\) seconds is
supporting img

1 \(100 \sqrt{3} J\)
2 \(30 J\)
3 \(150 \mathrm{~J}\)
4 \(60 \mathrm{~J}\)
PHXI06:WORK ENERGY AND POWER

355810 A force \(\vec{F}=k[y \hat{i}+x \hat{j}]\) where \(k\) is a positive constant acts on a particle moving in \(x\) - \(y\) plane starting from the point \((3,5)\), the particle is taken along a straight line to \((5,7)\). The work done by the force is:

1 15 \(K\)
2 Zero
3 35 \(K\)
4 20 \(K\)
PHXI06:WORK ENERGY AND POWER

355811 A particle moves under the effect of a force \(F=c x^{2}\) from \(x=0\) to \(x=x_{0}\). The work done in the process is

1 \(\dfrac{c x_{0}^{3}}{3}\)
2 \(c x_{0}^{2}\)
3 \(c x_{0}^{3}\)
4 \(\dfrac{c x_{0}^{3}}{2}\)
PHXI06:WORK ENERGY AND POWER

355812 The displacement \(x\) in metre of a particle of mass \(m\) \(kg\) moving in one dimension under the action of a force is related to the time \(t\) in second by the equation \(t=\sqrt{x}+3\), the work done by the force (in joule) in first six seconds is

1 \(9\;m/2\)
2 18 \(m\)
3 36 \(m\)
4 Zero
PHXI06:WORK ENERGY AND POWER

355808 A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him?

1 Positive
2 Negative
3 Zero Said
4 Nothing can be
PHXI06:WORK ENERGY AND POWER

355809 The figure shows all the surfaces are frictionless and mass of the block,\(m = 1\,kg\). The block and wedge are held initially at rest. Now wedge is given a horizontal acceleartion of \(10\,m/{s^2}\) by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in \(\sqrt{3}\) seconds is
supporting img

1 \(100 \sqrt{3} J\)
2 \(30 J\)
3 \(150 \mathrm{~J}\)
4 \(60 \mathrm{~J}\)
PHXI06:WORK ENERGY AND POWER

355810 A force \(\vec{F}=k[y \hat{i}+x \hat{j}]\) where \(k\) is a positive constant acts on a particle moving in \(x\) - \(y\) plane starting from the point \((3,5)\), the particle is taken along a straight line to \((5,7)\). The work done by the force is:

1 15 \(K\)
2 Zero
3 35 \(K\)
4 20 \(K\)
PHXI06:WORK ENERGY AND POWER

355811 A particle moves under the effect of a force \(F=c x^{2}\) from \(x=0\) to \(x=x_{0}\). The work done in the process is

1 \(\dfrac{c x_{0}^{3}}{3}\)
2 \(c x_{0}^{2}\)
3 \(c x_{0}^{3}\)
4 \(\dfrac{c x_{0}^{3}}{2}\)
PHXI06:WORK ENERGY AND POWER

355812 The displacement \(x\) in metre of a particle of mass \(m\) \(kg\) moving in one dimension under the action of a force is related to the time \(t\) in second by the equation \(t=\sqrt{x}+3\), the work done by the force (in joule) in first six seconds is

1 \(9\;m/2\)
2 18 \(m\)
3 36 \(m\)
4 Zero
PHXI06:WORK ENERGY AND POWER

355808 A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him?

1 Positive
2 Negative
3 Zero Said
4 Nothing can be
PHXI06:WORK ENERGY AND POWER

355809 The figure shows all the surfaces are frictionless and mass of the block,\(m = 1\,kg\). The block and wedge are held initially at rest. Now wedge is given a horizontal acceleartion of \(10\,m/{s^2}\) by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in \(\sqrt{3}\) seconds is
supporting img

1 \(100 \sqrt{3} J\)
2 \(30 J\)
3 \(150 \mathrm{~J}\)
4 \(60 \mathrm{~J}\)
PHXI06:WORK ENERGY AND POWER

355810 A force \(\vec{F}=k[y \hat{i}+x \hat{j}]\) where \(k\) is a positive constant acts on a particle moving in \(x\) - \(y\) plane starting from the point \((3,5)\), the particle is taken along a straight line to \((5,7)\). The work done by the force is:

1 15 \(K\)
2 Zero
3 35 \(K\)
4 20 \(K\)
PHXI06:WORK ENERGY AND POWER

355811 A particle moves under the effect of a force \(F=c x^{2}\) from \(x=0\) to \(x=x_{0}\). The work done in the process is

1 \(\dfrac{c x_{0}^{3}}{3}\)
2 \(c x_{0}^{2}\)
3 \(c x_{0}^{3}\)
4 \(\dfrac{c x_{0}^{3}}{2}\)
PHXI06:WORK ENERGY AND POWER

355812 The displacement \(x\) in metre of a particle of mass \(m\) \(kg\) moving in one dimension under the action of a force is related to the time \(t\) in second by the equation \(t=\sqrt{x}+3\), the work done by the force (in joule) in first six seconds is

1 \(9\;m/2\)
2 18 \(m\)
3 36 \(m\)
4 Zero