Applications of Newton’s Laws
PHXI05:LAWS OF MOTION

363095 In the setup shown, a 200 \(N\) block is supported in equilibrium with the help of a string and a spring. Extension in the spring is 4 \(cm\). Force constant of the spring is closest to \([g = 10m/{s^2}]\)
supporting img

1 \(30\,N/m\)
2 \(2500\,N/m\)
3 \(3000\,N/m\)
4 \(4000\,N/m\)
PHXI05:LAWS OF MOTION

363096 Two masses of \(10\,kg\) and \(20\,kg\) are connected by a massless spring, as shown in the figure. A force of \(100\,N\) acts on the \(20\,kg\) mass at the instant when the \(10\,kg\) mass has an acceleration of \({6 {~m} / {s}^{2}}\) towards right, the acceleration of the \(20\,kg\) mass is
supporting img

1 \({5 {~m} / {s}^{2}}\)
2 \({2 {~m} / {s}^{2}}\)
3 \({8 {~m} / {s}^{2}}\)
4 \({6 {~m} / {s}^{2}}\)
PHXI05:LAWS OF MOTION

363097 Figure shows a ball of mass \({m}\) connected with two ideal springs of force constant \({k}\), kept in equilibrium on a smooth incline, suddenly right spring is cut. What is magnitude of instantaneous acceleration (in \({{m} / {s}^{2}}\)) of ball?
supporting img

1 \(7\,m/{s^2}\)
2 \(5\,m/{s^2}\)
3 \(10\,m/{s^2}\)
4 \(3\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363098 A block of mass 3 \(kg\) is initially in equilibrium and is hanging by two identical springs \(A\) and \(B\) as shown in figure. If spring \(A\) is cut from lower point at \(t = 0\) then, find acceleration of block in \(m{s^{ - 2}}\) at \(t = 0\). (ignore rotational effect.)
supporting img

1 \(5\)
2 \(10\)
3 \(15\)
4 \(0\)
PHXI05:LAWS OF MOTION

363099 Two masses \(10\,kg\) and \(20\,kg\) respectively are connected by a massless spring as shown in figure. A force of \(200\,N\) acts on the \(20\;kg\) mass. At the instant shown is figure, the \(10\;kg\) mass has acceleration of \(12\;m/{s^2}.\) The value of acceleration of \(20\;kg\) mass is
supporting img

1 \(4\;m/{s^2}\)
2 \(10\;m/{s^2}\)
3 \(20\;m/{s^2}\)
4 \(30\;m/{s^2}\)
PHXI05:LAWS OF MOTION

363095 In the setup shown, a 200 \(N\) block is supported in equilibrium with the help of a string and a spring. Extension in the spring is 4 \(cm\). Force constant of the spring is closest to \([g = 10m/{s^2}]\)
supporting img

1 \(30\,N/m\)
2 \(2500\,N/m\)
3 \(3000\,N/m\)
4 \(4000\,N/m\)
PHXI05:LAWS OF MOTION

363096 Two masses of \(10\,kg\) and \(20\,kg\) are connected by a massless spring, as shown in the figure. A force of \(100\,N\) acts on the \(20\,kg\) mass at the instant when the \(10\,kg\) mass has an acceleration of \({6 {~m} / {s}^{2}}\) towards right, the acceleration of the \(20\,kg\) mass is
supporting img

1 \({5 {~m} / {s}^{2}}\)
2 \({2 {~m} / {s}^{2}}\)
3 \({8 {~m} / {s}^{2}}\)
4 \({6 {~m} / {s}^{2}}\)
PHXI05:LAWS OF MOTION

363097 Figure shows a ball of mass \({m}\) connected with two ideal springs of force constant \({k}\), kept in equilibrium on a smooth incline, suddenly right spring is cut. What is magnitude of instantaneous acceleration (in \({{m} / {s}^{2}}\)) of ball?
supporting img

1 \(7\,m/{s^2}\)
2 \(5\,m/{s^2}\)
3 \(10\,m/{s^2}\)
4 \(3\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363098 A block of mass 3 \(kg\) is initially in equilibrium and is hanging by two identical springs \(A\) and \(B\) as shown in figure. If spring \(A\) is cut from lower point at \(t = 0\) then, find acceleration of block in \(m{s^{ - 2}}\) at \(t = 0\). (ignore rotational effect.)
supporting img

1 \(5\)
2 \(10\)
3 \(15\)
4 \(0\)
PHXI05:LAWS OF MOTION

363099 Two masses \(10\,kg\) and \(20\,kg\) respectively are connected by a massless spring as shown in figure. A force of \(200\,N\) acts on the \(20\;kg\) mass. At the instant shown is figure, the \(10\;kg\) mass has acceleration of \(12\;m/{s^2}.\) The value of acceleration of \(20\;kg\) mass is
supporting img

1 \(4\;m/{s^2}\)
2 \(10\;m/{s^2}\)
3 \(20\;m/{s^2}\)
4 \(30\;m/{s^2}\)
PHXI05:LAWS OF MOTION

363095 In the setup shown, a 200 \(N\) block is supported in equilibrium with the help of a string and a spring. Extension in the spring is 4 \(cm\). Force constant of the spring is closest to \([g = 10m/{s^2}]\)
supporting img

1 \(30\,N/m\)
2 \(2500\,N/m\)
3 \(3000\,N/m\)
4 \(4000\,N/m\)
PHXI05:LAWS OF MOTION

363096 Two masses of \(10\,kg\) and \(20\,kg\) are connected by a massless spring, as shown in the figure. A force of \(100\,N\) acts on the \(20\,kg\) mass at the instant when the \(10\,kg\) mass has an acceleration of \({6 {~m} / {s}^{2}}\) towards right, the acceleration of the \(20\,kg\) mass is
supporting img

1 \({5 {~m} / {s}^{2}}\)
2 \({2 {~m} / {s}^{2}}\)
3 \({8 {~m} / {s}^{2}}\)
4 \({6 {~m} / {s}^{2}}\)
PHXI05:LAWS OF MOTION

363097 Figure shows a ball of mass \({m}\) connected with two ideal springs of force constant \({k}\), kept in equilibrium on a smooth incline, suddenly right spring is cut. What is magnitude of instantaneous acceleration (in \({{m} / {s}^{2}}\)) of ball?
supporting img

1 \(7\,m/{s^2}\)
2 \(5\,m/{s^2}\)
3 \(10\,m/{s^2}\)
4 \(3\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363098 A block of mass 3 \(kg\) is initially in equilibrium and is hanging by two identical springs \(A\) and \(B\) as shown in figure. If spring \(A\) is cut from lower point at \(t = 0\) then, find acceleration of block in \(m{s^{ - 2}}\) at \(t = 0\). (ignore rotational effect.)
supporting img

1 \(5\)
2 \(10\)
3 \(15\)
4 \(0\)
PHXI05:LAWS OF MOTION

363099 Two masses \(10\,kg\) and \(20\,kg\) respectively are connected by a massless spring as shown in figure. A force of \(200\,N\) acts on the \(20\;kg\) mass. At the instant shown is figure, the \(10\;kg\) mass has acceleration of \(12\;m/{s^2}.\) The value of acceleration of \(20\;kg\) mass is
supporting img

1 \(4\;m/{s^2}\)
2 \(10\;m/{s^2}\)
3 \(20\;m/{s^2}\)
4 \(30\;m/{s^2}\)
PHXI05:LAWS OF MOTION

363095 In the setup shown, a 200 \(N\) block is supported in equilibrium with the help of a string and a spring. Extension in the spring is 4 \(cm\). Force constant of the spring is closest to \([g = 10m/{s^2}]\)
supporting img

1 \(30\,N/m\)
2 \(2500\,N/m\)
3 \(3000\,N/m\)
4 \(4000\,N/m\)
PHXI05:LAWS OF MOTION

363096 Two masses of \(10\,kg\) and \(20\,kg\) are connected by a massless spring, as shown in the figure. A force of \(100\,N\) acts on the \(20\,kg\) mass at the instant when the \(10\,kg\) mass has an acceleration of \({6 {~m} / {s}^{2}}\) towards right, the acceleration of the \(20\,kg\) mass is
supporting img

1 \({5 {~m} / {s}^{2}}\)
2 \({2 {~m} / {s}^{2}}\)
3 \({8 {~m} / {s}^{2}}\)
4 \({6 {~m} / {s}^{2}}\)
PHXI05:LAWS OF MOTION

363097 Figure shows a ball of mass \({m}\) connected with two ideal springs of force constant \({k}\), kept in equilibrium on a smooth incline, suddenly right spring is cut. What is magnitude of instantaneous acceleration (in \({{m} / {s}^{2}}\)) of ball?
supporting img

1 \(7\,m/{s^2}\)
2 \(5\,m/{s^2}\)
3 \(10\,m/{s^2}\)
4 \(3\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363098 A block of mass 3 \(kg\) is initially in equilibrium and is hanging by two identical springs \(A\) and \(B\) as shown in figure. If spring \(A\) is cut from lower point at \(t = 0\) then, find acceleration of block in \(m{s^{ - 2}}\) at \(t = 0\). (ignore rotational effect.)
supporting img

1 \(5\)
2 \(10\)
3 \(15\)
4 \(0\)
PHXI05:LAWS OF MOTION

363099 Two masses \(10\,kg\) and \(20\,kg\) respectively are connected by a massless spring as shown in figure. A force of \(200\,N\) acts on the \(20\;kg\) mass. At the instant shown is figure, the \(10\;kg\) mass has acceleration of \(12\;m/{s^2}.\) The value of acceleration of \(20\;kg\) mass is
supporting img

1 \(4\;m/{s^2}\)
2 \(10\;m/{s^2}\)
3 \(20\;m/{s^2}\)
4 \(30\;m/{s^2}\)
PHXI05:LAWS OF MOTION

363095 In the setup shown, a 200 \(N\) block is supported in equilibrium with the help of a string and a spring. Extension in the spring is 4 \(cm\). Force constant of the spring is closest to \([g = 10m/{s^2}]\)
supporting img

1 \(30\,N/m\)
2 \(2500\,N/m\)
3 \(3000\,N/m\)
4 \(4000\,N/m\)
PHXI05:LAWS OF MOTION

363096 Two masses of \(10\,kg\) and \(20\,kg\) are connected by a massless spring, as shown in the figure. A force of \(100\,N\) acts on the \(20\,kg\) mass at the instant when the \(10\,kg\) mass has an acceleration of \({6 {~m} / {s}^{2}}\) towards right, the acceleration of the \(20\,kg\) mass is
supporting img

1 \({5 {~m} / {s}^{2}}\)
2 \({2 {~m} / {s}^{2}}\)
3 \({8 {~m} / {s}^{2}}\)
4 \({6 {~m} / {s}^{2}}\)
PHXI05:LAWS OF MOTION

363097 Figure shows a ball of mass \({m}\) connected with two ideal springs of force constant \({k}\), kept in equilibrium on a smooth incline, suddenly right spring is cut. What is magnitude of instantaneous acceleration (in \({{m} / {s}^{2}}\)) of ball?
supporting img

1 \(7\,m/{s^2}\)
2 \(5\,m/{s^2}\)
3 \(10\,m/{s^2}\)
4 \(3\,m/{s^2}\)
PHXI05:LAWS OF MOTION

363098 A block of mass 3 \(kg\) is initially in equilibrium and is hanging by two identical springs \(A\) and \(B\) as shown in figure. If spring \(A\) is cut from lower point at \(t = 0\) then, find acceleration of block in \(m{s^{ - 2}}\) at \(t = 0\). (ignore rotational effect.)
supporting img

1 \(5\)
2 \(10\)
3 \(15\)
4 \(0\)
PHXI05:LAWS OF MOTION

363099 Two masses \(10\,kg\) and \(20\,kg\) respectively are connected by a massless spring as shown in figure. A force of \(200\,N\) acts on the \(20\;kg\) mass. At the instant shown is figure, the \(10\;kg\) mass has acceleration of \(12\;m/{s^2}.\) The value of acceleration of \(20\;kg\) mass is
supporting img

1 \(4\;m/{s^2}\)
2 \(10\;m/{s^2}\)
3 \(20\;m/{s^2}\)
4 \(30\;m/{s^2}\)