0

Guest

Courses New

A 20N metal block is suspended by a spring balance. A beaker containing some water is placed on the weighing machine reads 36N. The spring balance is now lowered so that the block gets immersed in water. The spring balance now reads 16N. What will be the reading of the weighing machine ?


 A 20N metal block is suspended by a spring balance. A beaker containing some water is placed on the weighing machine reads 36N. The spring balance is now lowered so that the block gets immersed in water. The spring balance now reads 16N. What will be the reading of the weighing machine ?

Grade:

2 Answers

Aman Bansal
592 Points
11 years ago

dear kumar gaurav,

The spring balance reading decreases by (20-16) 4N when the block is immersed in water,

therefore the upthrust on the block is 4N.

according to the third law of motion it will exert an equal and opposite force

therefore the reading of the weighing machine will be

36+4 = 40 N

We are all IITians and here to help you in your IIT JEE preparation.

Now you can win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar : Click here to download the toolbar.. 

AMAN BANSAL

Agniva Bagchi
11 Points
4 years ago
initial reading =20N 
Final reading =16N
decreased weight=20-16=4N(upward direction)
now weight recorded by weighing machine=36N
therefore the reading of the weighing machine will be 36+4=40N(downward direction)(acc.to newton’s third law)
 
if you like the give a thums up!!!
 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Thermal Physics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More