OBJECTS SUSPENDED BY STRINGS \& APPARENT WEIGHT
Laws of Motion

270150 A \(60 \mathrm{~kg}\) man is inside a lift which is moving up with an acceleration of \(2.45 \mathrm{~ms}^{-2}\). The apparent percentage change in his weight is,

1 \(20 \%\)
2 \(25 \%\)
3 \(50 \%\)
4 \(75 \%\)
Laws of Motion

270151 The apparent weight of a person inside a lift is \(\mathrm{W}_{1}\) when lift moves up with certain acceleration and is \(\mathrm{W}_{2}\) when lift moves down with same acceleration. The weight of person when lift moves up with constant speed is

1 \(\frac{W_{1}+W_{2}}{2}\)
2 \(\frac{W_{1}-W_{2}}{2}\)
3 \(2 \mathrm{~W}_{1}\)
4 \(2 \mathrm{~W}_{2}\)
Laws of Motion

270152 A person of mass \(60 \mathrm{~kg}\) is in a lift. The change in the apparent weight of the person, when the lift moves up with an acceleration of \(2 \mathrm{~ms}^{-2}\) and then down with an acceleration of \(2 \mathrm{~ms}^{-2}\), is (take \(\mathbf{g}=10 \mathrm{~m} / \mathrm{sec}^{2}\) )

1 \(120 \mathrm{~N}\)
2 \(240 \mathrm{~N}\)
3 \(480 \mathrm{~N}\)
4 \(720 \mathrm{~N}\)
Laws of Motion

270153 A rope of length \(10 \mathrm{~m}\) and linear density \(0.5 \mathrm{~kg} /\) \(m\) is lying length wise on a smooth horizontal floor. It is pulled by a force of \(25 \mathrm{~N}\). The tension in the rope at a point \(6 \mathrm{~m}\) away from the point of application is

1 \(20 \mathrm{~N}\)
2 \(15 \mathrm{~N}\)
3 \(10 \mathrm{~N}\)
4 \(5 \mathrm{~N}\)
Laws of Motion

270154 Three blocks of masses \(m_{1}, m_{2}\) and \(m_{3}\) are connected by a massless string as shown in figure on a frictionless table. They are pulled with a force \(\mathbf{T}_{3}=40 \mathrm{~N}\). If \(m_{1}=10 \mathrm{~kg}, m_{2}=6 \mathrm{~kg}\) and \(m_{3}=4 \mathrm{~kg}\), then tension \(\mathrm{T}_{2}\) will be

1 \(10 \mathrm{~N}\)
2 \(20 \mathrm{~N}\)
3 \(32 \mathrm{~N}\)
4 \(40 \mathrm{~N}\)
Laws of Motion

270150 A \(60 \mathrm{~kg}\) man is inside a lift which is moving up with an acceleration of \(2.45 \mathrm{~ms}^{-2}\). The apparent percentage change in his weight is,

1 \(20 \%\)
2 \(25 \%\)
3 \(50 \%\)
4 \(75 \%\)
Laws of Motion

270151 The apparent weight of a person inside a lift is \(\mathrm{W}_{1}\) when lift moves up with certain acceleration and is \(\mathrm{W}_{2}\) when lift moves down with same acceleration. The weight of person when lift moves up with constant speed is

1 \(\frac{W_{1}+W_{2}}{2}\)
2 \(\frac{W_{1}-W_{2}}{2}\)
3 \(2 \mathrm{~W}_{1}\)
4 \(2 \mathrm{~W}_{2}\)
Laws of Motion

270152 A person of mass \(60 \mathrm{~kg}\) is in a lift. The change in the apparent weight of the person, when the lift moves up with an acceleration of \(2 \mathrm{~ms}^{-2}\) and then down with an acceleration of \(2 \mathrm{~ms}^{-2}\), is (take \(\mathbf{g}=10 \mathrm{~m} / \mathrm{sec}^{2}\) )

1 \(120 \mathrm{~N}\)
2 \(240 \mathrm{~N}\)
3 \(480 \mathrm{~N}\)
4 \(720 \mathrm{~N}\)
Laws of Motion

270153 A rope of length \(10 \mathrm{~m}\) and linear density \(0.5 \mathrm{~kg} /\) \(m\) is lying length wise on a smooth horizontal floor. It is pulled by a force of \(25 \mathrm{~N}\). The tension in the rope at a point \(6 \mathrm{~m}\) away from the point of application is

1 \(20 \mathrm{~N}\)
2 \(15 \mathrm{~N}\)
3 \(10 \mathrm{~N}\)
4 \(5 \mathrm{~N}\)
Laws of Motion

270154 Three blocks of masses \(m_{1}, m_{2}\) and \(m_{3}\) are connected by a massless string as shown in figure on a frictionless table. They are pulled with a force \(\mathbf{T}_{3}=40 \mathrm{~N}\). If \(m_{1}=10 \mathrm{~kg}, m_{2}=6 \mathrm{~kg}\) and \(m_{3}=4 \mathrm{~kg}\), then tension \(\mathrm{T}_{2}\) will be

1 \(10 \mathrm{~N}\)
2 \(20 \mathrm{~N}\)
3 \(32 \mathrm{~N}\)
4 \(40 \mathrm{~N}\)
Laws of Motion

270150 A \(60 \mathrm{~kg}\) man is inside a lift which is moving up with an acceleration of \(2.45 \mathrm{~ms}^{-2}\). The apparent percentage change in his weight is,

1 \(20 \%\)
2 \(25 \%\)
3 \(50 \%\)
4 \(75 \%\)
Laws of Motion

270151 The apparent weight of a person inside a lift is \(\mathrm{W}_{1}\) when lift moves up with certain acceleration and is \(\mathrm{W}_{2}\) when lift moves down with same acceleration. The weight of person when lift moves up with constant speed is

1 \(\frac{W_{1}+W_{2}}{2}\)
2 \(\frac{W_{1}-W_{2}}{2}\)
3 \(2 \mathrm{~W}_{1}\)
4 \(2 \mathrm{~W}_{2}\)
Laws of Motion

270152 A person of mass \(60 \mathrm{~kg}\) is in a lift. The change in the apparent weight of the person, when the lift moves up with an acceleration of \(2 \mathrm{~ms}^{-2}\) and then down with an acceleration of \(2 \mathrm{~ms}^{-2}\), is (take \(\mathbf{g}=10 \mathrm{~m} / \mathrm{sec}^{2}\) )

1 \(120 \mathrm{~N}\)
2 \(240 \mathrm{~N}\)
3 \(480 \mathrm{~N}\)
4 \(720 \mathrm{~N}\)
Laws of Motion

270153 A rope of length \(10 \mathrm{~m}\) and linear density \(0.5 \mathrm{~kg} /\) \(m\) is lying length wise on a smooth horizontal floor. It is pulled by a force of \(25 \mathrm{~N}\). The tension in the rope at a point \(6 \mathrm{~m}\) away from the point of application is

1 \(20 \mathrm{~N}\)
2 \(15 \mathrm{~N}\)
3 \(10 \mathrm{~N}\)
4 \(5 \mathrm{~N}\)
Laws of Motion

270154 Three blocks of masses \(m_{1}, m_{2}\) and \(m_{3}\) are connected by a massless string as shown in figure on a frictionless table. They are pulled with a force \(\mathbf{T}_{3}=40 \mathrm{~N}\). If \(m_{1}=10 \mathrm{~kg}, m_{2}=6 \mathrm{~kg}\) and \(m_{3}=4 \mathrm{~kg}\), then tension \(\mathrm{T}_{2}\) will be

1 \(10 \mathrm{~N}\)
2 \(20 \mathrm{~N}\)
3 \(32 \mathrm{~N}\)
4 \(40 \mathrm{~N}\)
Laws of Motion

270150 A \(60 \mathrm{~kg}\) man is inside a lift which is moving up with an acceleration of \(2.45 \mathrm{~ms}^{-2}\). The apparent percentage change in his weight is,

1 \(20 \%\)
2 \(25 \%\)
3 \(50 \%\)
4 \(75 \%\)
Laws of Motion

270151 The apparent weight of a person inside a lift is \(\mathrm{W}_{1}\) when lift moves up with certain acceleration and is \(\mathrm{W}_{2}\) when lift moves down with same acceleration. The weight of person when lift moves up with constant speed is

1 \(\frac{W_{1}+W_{2}}{2}\)
2 \(\frac{W_{1}-W_{2}}{2}\)
3 \(2 \mathrm{~W}_{1}\)
4 \(2 \mathrm{~W}_{2}\)
Laws of Motion

270152 A person of mass \(60 \mathrm{~kg}\) is in a lift. The change in the apparent weight of the person, when the lift moves up with an acceleration of \(2 \mathrm{~ms}^{-2}\) and then down with an acceleration of \(2 \mathrm{~ms}^{-2}\), is (take \(\mathbf{g}=10 \mathrm{~m} / \mathrm{sec}^{2}\) )

1 \(120 \mathrm{~N}\)
2 \(240 \mathrm{~N}\)
3 \(480 \mathrm{~N}\)
4 \(720 \mathrm{~N}\)
Laws of Motion

270153 A rope of length \(10 \mathrm{~m}\) and linear density \(0.5 \mathrm{~kg} /\) \(m\) is lying length wise on a smooth horizontal floor. It is pulled by a force of \(25 \mathrm{~N}\). The tension in the rope at a point \(6 \mathrm{~m}\) away from the point of application is

1 \(20 \mathrm{~N}\)
2 \(15 \mathrm{~N}\)
3 \(10 \mathrm{~N}\)
4 \(5 \mathrm{~N}\)
Laws of Motion

270154 Three blocks of masses \(m_{1}, m_{2}\) and \(m_{3}\) are connected by a massless string as shown in figure on a frictionless table. They are pulled with a force \(\mathbf{T}_{3}=40 \mathrm{~N}\). If \(m_{1}=10 \mathrm{~kg}, m_{2}=6 \mathrm{~kg}\) and \(m_{3}=4 \mathrm{~kg}\), then tension \(\mathrm{T}_{2}\) will be

1 \(10 \mathrm{~N}\)
2 \(20 \mathrm{~N}\)
3 \(32 \mathrm{~N}\)
4 \(40 \mathrm{~N}\)
Laws of Motion

270150 A \(60 \mathrm{~kg}\) man is inside a lift which is moving up with an acceleration of \(2.45 \mathrm{~ms}^{-2}\). The apparent percentage change in his weight is,

1 \(20 \%\)
2 \(25 \%\)
3 \(50 \%\)
4 \(75 \%\)
Laws of Motion

270151 The apparent weight of a person inside a lift is \(\mathrm{W}_{1}\) when lift moves up with certain acceleration and is \(\mathrm{W}_{2}\) when lift moves down with same acceleration. The weight of person when lift moves up with constant speed is

1 \(\frac{W_{1}+W_{2}}{2}\)
2 \(\frac{W_{1}-W_{2}}{2}\)
3 \(2 \mathrm{~W}_{1}\)
4 \(2 \mathrm{~W}_{2}\)
Laws of Motion

270152 A person of mass \(60 \mathrm{~kg}\) is in a lift. The change in the apparent weight of the person, when the lift moves up with an acceleration of \(2 \mathrm{~ms}^{-2}\) and then down with an acceleration of \(2 \mathrm{~ms}^{-2}\), is (take \(\mathbf{g}=10 \mathrm{~m} / \mathrm{sec}^{2}\) )

1 \(120 \mathrm{~N}\)
2 \(240 \mathrm{~N}\)
3 \(480 \mathrm{~N}\)
4 \(720 \mathrm{~N}\)
Laws of Motion

270153 A rope of length \(10 \mathrm{~m}\) and linear density \(0.5 \mathrm{~kg} /\) \(m\) is lying length wise on a smooth horizontal floor. It is pulled by a force of \(25 \mathrm{~N}\). The tension in the rope at a point \(6 \mathrm{~m}\) away from the point of application is

1 \(20 \mathrm{~N}\)
2 \(15 \mathrm{~N}\)
3 \(10 \mathrm{~N}\)
4 \(5 \mathrm{~N}\)
Laws of Motion

270154 Three blocks of masses \(m_{1}, m_{2}\) and \(m_{3}\) are connected by a massless string as shown in figure on a frictionless table. They are pulled with a force \(\mathbf{T}_{3}=40 \mathrm{~N}\). If \(m_{1}=10 \mathrm{~kg}, m_{2}=6 \mathrm{~kg}\) and \(m_{3}=4 \mathrm{~kg}\), then tension \(\mathrm{T}_{2}\) will be

1 \(10 \mathrm{~N}\)
2 \(20 \mathrm{~N}\)
3 \(32 \mathrm{~N}\)
4 \(40 \mathrm{~N}\)