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  • Two masses A and B, each of mass M are fixed together by a massless spring. A force acts on the mass B as shown in the figure. If the mass A starts moving away from mass B with accelertaion 'a' then the accelertaion of mass B will be: <img alt=

Two masses A and B, each of mass M are fixed together by a massless spring. A force acts on the mass B as shown in the figure. If the mass A starts moving away from mass B with accelertaion 'a' then the accelertaion of mass B will be:  
Option: 1 \frac{Ma-F}{M}
Option: 2 \frac{F+Ma}{M}
Option: 3 \frac{F-Ma}{M}
Option: 4 \frac{MF}{F+Ma}

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\begin{array}{l} a_{\mathrm{cm}}=\frac{\mathrm{m}_{1} \mathrm{a}_{1}+\mathrm{m}_{2} \mathrm{a}_{2}}{\mathrm{~m}_{1}+\mathrm{m}_{2}} \\ \\ \frac{\mathrm{F}}{2 \mathrm{M}}=\frac{\mathrm{Ma}+\mathrm{Ma}_{\mathrm{B}}}{2 \mathrm{M}} \\\\ \mathrm{a}_{\mathrm{B}}=\frac{\mathrm{F}-\mathrm{Ma}}{\mathrm{M}} \end{array}

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Deependra Verma

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