RBTS PAPER 3(PHYSICS)
3 RBTS PAPER

162605 A stone tide with a string is moving in a vertical circle of radius ' \(r\) '. Its minimum velocity at the highest point of the circle will be

1 \(\sqrt{3 g r}\)
2 \(\sqrt{2 g r}\)
3 \(\sqrt{g r}\)
4 \(\sqrt{\frac{g r}{2}}\)
3 RBTS PAPER

162590 A body covers a distance of \(\mathbf{2} \mathbf{m}\) under the action of force \(F=(15-4 x) N\) where \(x\) is the distance in metres from starting point. The work done by the force is :

1 \(11 \mathrm{~J}\)
2 \(22 \mathrm{~J}\)
3 \(7 \mathrm{~J}\)
4 \(14 \mathrm{~J}\)
3 RBTS PAPER

162591 An elevator can carry a maximum load of \(1800 \mathrm{~kg}\) (elevator + passengers) is moving up with a constant speed of \(2 \mathrm{~ms}^{-1}\). The frictional force opposing the motion is \(4000 \mathrm{~N}\). Determine the minimum power delivered by the motor to the elevator in watts.

1 \(44000 \mathrm{~W}\)
2 \(50000 \mathrm{~W}\)
3 \(22000 \mathrm{~W}\)
4 \(11000 \mathrm{~W}\)
3 RBTS PAPER

162565 A force acts on a \(2 \mathrm{~kg}\) object so that its position is given as a function of time as \(x=3 t^2+5\). What is the work done by this force in first 5 seconds :

1 \(850 J\)
2 \(900 \mathrm{~J}\)
3 \(950 \mathrm{~J}\)
4 \(875 \mathrm{~J}\).
3 RBTS PAPER

162566 A block of mass \(m\) is kept on a platform which starts from rest with a constant acceleration \(g / 2\) upwards, as shown in the figure. Work done by normal reaction on block In time \(t\) is :

1 zero
2 \(\frac{3 \mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 \(-\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
4 \(\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 RBTS PAPER

162605 A stone tide with a string is moving in a vertical circle of radius ' \(r\) '. Its minimum velocity at the highest point of the circle will be

1 \(\sqrt{3 g r}\)
2 \(\sqrt{2 g r}\)
3 \(\sqrt{g r}\)
4 \(\sqrt{\frac{g r}{2}}\)
3 RBTS PAPER

162590 A body covers a distance of \(\mathbf{2} \mathbf{m}\) under the action of force \(F=(15-4 x) N\) where \(x\) is the distance in metres from starting point. The work done by the force is :

1 \(11 \mathrm{~J}\)
2 \(22 \mathrm{~J}\)
3 \(7 \mathrm{~J}\)
4 \(14 \mathrm{~J}\)
3 RBTS PAPER

162591 An elevator can carry a maximum load of \(1800 \mathrm{~kg}\) (elevator + passengers) is moving up with a constant speed of \(2 \mathrm{~ms}^{-1}\). The frictional force opposing the motion is \(4000 \mathrm{~N}\). Determine the minimum power delivered by the motor to the elevator in watts.

1 \(44000 \mathrm{~W}\)
2 \(50000 \mathrm{~W}\)
3 \(22000 \mathrm{~W}\)
4 \(11000 \mathrm{~W}\)
3 RBTS PAPER

162565 A force acts on a \(2 \mathrm{~kg}\) object so that its position is given as a function of time as \(x=3 t^2+5\). What is the work done by this force in first 5 seconds :

1 \(850 J\)
2 \(900 \mathrm{~J}\)
3 \(950 \mathrm{~J}\)
4 \(875 \mathrm{~J}\).
3 RBTS PAPER

162566 A block of mass \(m\) is kept on a platform which starts from rest with a constant acceleration \(g / 2\) upwards, as shown in the figure. Work done by normal reaction on block In time \(t\) is :

1 zero
2 \(\frac{3 \mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 \(-\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
4 \(\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 RBTS PAPER

162605 A stone tide with a string is moving in a vertical circle of radius ' \(r\) '. Its minimum velocity at the highest point of the circle will be

1 \(\sqrt{3 g r}\)
2 \(\sqrt{2 g r}\)
3 \(\sqrt{g r}\)
4 \(\sqrt{\frac{g r}{2}}\)
3 RBTS PAPER

162590 A body covers a distance of \(\mathbf{2} \mathbf{m}\) under the action of force \(F=(15-4 x) N\) where \(x\) is the distance in metres from starting point. The work done by the force is :

1 \(11 \mathrm{~J}\)
2 \(22 \mathrm{~J}\)
3 \(7 \mathrm{~J}\)
4 \(14 \mathrm{~J}\)
3 RBTS PAPER

162591 An elevator can carry a maximum load of \(1800 \mathrm{~kg}\) (elevator + passengers) is moving up with a constant speed of \(2 \mathrm{~ms}^{-1}\). The frictional force opposing the motion is \(4000 \mathrm{~N}\). Determine the minimum power delivered by the motor to the elevator in watts.

1 \(44000 \mathrm{~W}\)
2 \(50000 \mathrm{~W}\)
3 \(22000 \mathrm{~W}\)
4 \(11000 \mathrm{~W}\)
3 RBTS PAPER

162565 A force acts on a \(2 \mathrm{~kg}\) object so that its position is given as a function of time as \(x=3 t^2+5\). What is the work done by this force in first 5 seconds :

1 \(850 J\)
2 \(900 \mathrm{~J}\)
3 \(950 \mathrm{~J}\)
4 \(875 \mathrm{~J}\).
3 RBTS PAPER

162566 A block of mass \(m\) is kept on a platform which starts from rest with a constant acceleration \(g / 2\) upwards, as shown in the figure. Work done by normal reaction on block In time \(t\) is :

1 zero
2 \(\frac{3 \mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 \(-\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
4 \(\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 RBTS PAPER

162605 A stone tide with a string is moving in a vertical circle of radius ' \(r\) '. Its minimum velocity at the highest point of the circle will be

1 \(\sqrt{3 g r}\)
2 \(\sqrt{2 g r}\)
3 \(\sqrt{g r}\)
4 \(\sqrt{\frac{g r}{2}}\)
3 RBTS PAPER

162590 A body covers a distance of \(\mathbf{2} \mathbf{m}\) under the action of force \(F=(15-4 x) N\) where \(x\) is the distance in metres from starting point. The work done by the force is :

1 \(11 \mathrm{~J}\)
2 \(22 \mathrm{~J}\)
3 \(7 \mathrm{~J}\)
4 \(14 \mathrm{~J}\)
3 RBTS PAPER

162591 An elevator can carry a maximum load of \(1800 \mathrm{~kg}\) (elevator + passengers) is moving up with a constant speed of \(2 \mathrm{~ms}^{-1}\). The frictional force opposing the motion is \(4000 \mathrm{~N}\). Determine the minimum power delivered by the motor to the elevator in watts.

1 \(44000 \mathrm{~W}\)
2 \(50000 \mathrm{~W}\)
3 \(22000 \mathrm{~W}\)
4 \(11000 \mathrm{~W}\)
3 RBTS PAPER

162565 A force acts on a \(2 \mathrm{~kg}\) object so that its position is given as a function of time as \(x=3 t^2+5\). What is the work done by this force in first 5 seconds :

1 \(850 J\)
2 \(900 \mathrm{~J}\)
3 \(950 \mathrm{~J}\)
4 \(875 \mathrm{~J}\).
3 RBTS PAPER

162566 A block of mass \(m\) is kept on a platform which starts from rest with a constant acceleration \(g / 2\) upwards, as shown in the figure. Work done by normal reaction on block In time \(t\) is :

1 zero
2 \(\frac{3 \mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 \(-\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
4 \(\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 RBTS PAPER

162605 A stone tide with a string is moving in a vertical circle of radius ' \(r\) '. Its minimum velocity at the highest point of the circle will be

1 \(\sqrt{3 g r}\)
2 \(\sqrt{2 g r}\)
3 \(\sqrt{g r}\)
4 \(\sqrt{\frac{g r}{2}}\)
3 RBTS PAPER

162590 A body covers a distance of \(\mathbf{2} \mathbf{m}\) under the action of force \(F=(15-4 x) N\) where \(x\) is the distance in metres from starting point. The work done by the force is :

1 \(11 \mathrm{~J}\)
2 \(22 \mathrm{~J}\)
3 \(7 \mathrm{~J}\)
4 \(14 \mathrm{~J}\)
3 RBTS PAPER

162591 An elevator can carry a maximum load of \(1800 \mathrm{~kg}\) (elevator + passengers) is moving up with a constant speed of \(2 \mathrm{~ms}^{-1}\). The frictional force opposing the motion is \(4000 \mathrm{~N}\). Determine the minimum power delivered by the motor to the elevator in watts.

1 \(44000 \mathrm{~W}\)
2 \(50000 \mathrm{~W}\)
3 \(22000 \mathrm{~W}\)
4 \(11000 \mathrm{~W}\)
3 RBTS PAPER

162565 A force acts on a \(2 \mathrm{~kg}\) object so that its position is given as a function of time as \(x=3 t^2+5\). What is the work done by this force in first 5 seconds :

1 \(850 J\)
2 \(900 \mathrm{~J}\)
3 \(950 \mathrm{~J}\)
4 \(875 \mathrm{~J}\).
3 RBTS PAPER

162566 A block of mass \(m\) is kept on a platform which starts from rest with a constant acceleration \(g / 2\) upwards, as shown in the figure. Work done by normal reaction on block In time \(t\) is :

1 zero
2 \(\frac{3 \mathrm{mg}^2 \mathrm{t}^2}{8}\)
3 \(-\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)
4 \(\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}\)