Question

A block with m1 is on a frictionless table attached to a string which is attached to a hanging mass, m2. Find the acceleration of the system and the tension in the string. What is the acceleration and tension if m1=7kg and m2= 3kg?

Answer 1

For 7kg block
\[T=7a\]... (1)
For 3 kg block
\[3g-T=3a\]
\[From (1)... 30-7a=3a\]
\[a=3\]
\[T=21\]