Question

A block of mass 5kg lying on horizontal frictionless table. A string attached to it passes over a pulley fixed to the end of table

Answer 1

Answer:

Explanation:

The given answer looks like:

mg−T=9a9×9.8−T=9a22.2−T=9a --- (1)

Where did 9a come from?

Then it continues

T=5a --- (2)sub (2) into (1)22.2−5a=9a14a=88.2a=6.3T=5a=5×6.3=31.5N

Hope this helps you