Question

two masses of $5kg$ and $10kg$ are suspended from a fixed support as shown in figure. The system is pulled downwards with a force of $150N$ appiled to the lower mass. The string attached the support breakes and the systerm accelerates downwwards. If the downward force continues to act,the acceleration of the systerm is

• A. $5m/s^2$
• B. $10m/s^2$
• C. $20m/s^2$
• D. $30m/s^2$

Answer 1

The correct option is C $20m/s^2$

After the string breaks net downwards force=300N

And total mass of system =15kg

So downward acceleration =20m/s${}^2$