Question

if a book of mass 50 kg is placed on the table of mass 200 kg what will be the weight of table and reaction of table on the book?​

Answer 1

Answer:

See the answer below.

Explanation:

The weight of the table should be equal to the weight of the table plus the weight of the book.

$w_{table}=m_{table}*g\\w_{table}=200*9.81\\w_{table}=1962[N]$

And for the book

$w_{book}=m_{book}*g\\w_{book}=50*9.81\\w_{book}=490.5[N]$

And the total weight

$w = w_{table}+w_{book}\\w=1962+490.5\\w = 2452.5 [N]$

For the system to be in balance, the reaction force exerted by the table on the book must be equal to the weight of the book. This force in physics is known as the normal force.

$N_{force} = w_{book}\\N_{force}=490.5[N]$