355619 A spring of spring constant \(2N\,c{m^{ - 1}}\) has an extension of 5 \(cm\). The minimum work done in joule in increasing the extension from 5 \(cm\) to 15 \(cm\) is

355620 Assertion :
A spring of force constant \(k\) is cut into two pieces having lengths in the ratio \({\rm{1:2}}\). The force constant of series combination of the two parts is \(3 k / 2\).
Reason :
The spring connected in series are represented by \(k=k_{1}+k_{2} \quad\)

355621 Two blocks of mass 3 \(kg\) and 6 \(kg\) respectively are placed on a smooth horizontal surface. They are connected by a light spring of force constant \(k = 200\,N/m\). Initially the spring is unstretched. The indicated velocities are imparted to the blocks. The maximum extension of the spring will be :-

355622 Two springs have their force constants \(k_{1}\) and \(k_{2}\left(\mathrm{~K}_{2}>\mathrm{K}_{1}\right)\). When they are stretched by the same force, work done is

355619 A spring of spring constant \(2N\,c{m^{ - 1}}\) has an extension of 5 \(cm\). The minimum work done in joule in increasing the extension from 5 \(cm\) to 15 \(cm\) is

355620 Assertion :
A spring of force constant \(k\) is cut into two pieces having lengths in the ratio \({\rm{1:2}}\). The force constant of series combination of the two parts is \(3 k / 2\).
Reason :
The spring connected in series are represented by \(k=k_{1}+k_{2} \quad\)

355621 Two blocks of mass 3 \(kg\) and 6 \(kg\) respectively are placed on a smooth horizontal surface. They are connected by a light spring of force constant \(k = 200\,N/m\). Initially the spring is unstretched. The indicated velocities are imparted to the blocks. The maximum extension of the spring will be :-

355622 Two springs have their force constants \(k_{1}\) and \(k_{2}\left(\mathrm{~K}_{2}>\mathrm{K}_{1}\right)\). When they are stretched by the same force, work done is

355619 A spring of spring constant \(2N\,c{m^{ - 1}}\) has an extension of 5 \(cm\). The minimum work done in joule in increasing the extension from 5 \(cm\) to 15 \(cm\) is

355620 Assertion :
A spring of force constant \(k\) is cut into two pieces having lengths in the ratio \({\rm{1:2}}\). The force constant of series combination of the two parts is \(3 k / 2\).
Reason :
The spring connected in series are represented by \(k=k_{1}+k_{2} \quad\)

355621 Two blocks of mass 3 \(kg\) and 6 \(kg\) respectively are placed on a smooth horizontal surface. They are connected by a light spring of force constant \(k = 200\,N/m\). Initially the spring is unstretched. The indicated velocities are imparted to the blocks. The maximum extension of the spring will be :-

355622 Two springs have their force constants \(k_{1}\) and \(k_{2}\left(\mathrm{~K}_{2}>\mathrm{K}_{1}\right)\). When they are stretched by the same force, work done is

355619 A spring of spring constant \(2N\,c{m^{ - 1}}\) has an extension of 5 \(cm\). The minimum work done in joule in increasing the extension from 5 \(cm\) to 15 \(cm\) is

355620 Assertion :
A spring of force constant \(k\) is cut into two pieces having lengths in the ratio \({\rm{1:2}}\). The force constant of series combination of the two parts is \(3 k / 2\).
Reason :
The spring connected in series are represented by \(k=k_{1}+k_{2} \quad\)

355621 Two blocks of mass 3 \(kg\) and 6 \(kg\) respectively are placed on a smooth horizontal surface. They are connected by a light spring of force constant \(k = 200\,N/m\). Initially the spring is unstretched. The indicated velocities are imparted to the blocks. The maximum extension of the spring will be :-

355622 Two springs have their force constants \(k_{1}\) and \(k_{2}\left(\mathrm{~K}_{2}>\mathrm{K}_{1}\right)\). When they are stretched by the same force, work done is