Find the best tutors and institutes for Class 12 Tuition

Find Best Class 12 Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Outside India?

Search for topics

A person of mass 50 kg stands on a weighing scale on a lift. If the lift is descending with a downward acceleration of 9 m/s2 . What would be the reading of weighing scale?

Asked by Last Modified  

CBSE/Class 11/Science/Physics

Follow 3
Answer

4 Answers

Please enter your answer

Physics Teacher

Mg-N = Ma N=M(g-a) Where N= apparent weight or the reading on the weighing machine N= 50(9.8-9) =50×.,8 newton = 40/9.8 kg = 12newton
Comments

Mg(downward) - ma(pseudo force upward ) =weighing machine reading 50N-45N =5N( answer)
1 Comments

Tutor

Mass of the person, m = 50 kgDescending acceleration, a = 9 m/${{s}^{2}}$Acceleration due to gravity, g = 10 m/${{s}^{2}}$ Apparent weight of the person,R = m(g-a) =50(10-9) = 50N .’. Reading of the weighing scale =R/g =50/10 = 5 kg
Comments

Awarded as a Best Physics Teacher from IIT

Since lift is descendin so the downward force (i.e.weight) is greater than upward reactionary force so mg-R=m a R=m(g-a) R=50(9.8-9) R=50(0.8) R=40 N So the reading of weighing scale is =40/9.8 =4.08kg read more

Since lift is descendin so the downward force (i.e.weight) is greater than upward reactionary force so

mg-R=m a

R=m(g-a)

R=50(9.8-9)

R=50(0.8)

R=40 N

So the reading of weighing scale is =40/9.8

                                =4.08kg

read less
Comments

View 2 more Answers

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Useful Collision Concepts Two dimensional Collision
We should note the following concepts when solving a Two-Body Collision Numerical:-Distance Between the centres of two Bodies -"b."When we have two objects colliding with each other, we assume both are...

NEET : a possible dream
When I was in class Xi , I wonder seeing a doctor.It seems almost impossible.Its been five years from then ,I'm a final year MBBS student at CMC ,oldest medical College in whole Asia . It took me 2 years...

What is Physics?
Physics is not only a subject it is an observation. So if someone wants to learn physics first thing he needs to learn is just how to observe things. Just take an example of a guy who is sitting inside...

Tushar Lohani | 08 Jan

1 0
0

Recommended Articles

Majority of students consider learning a language quite hard, and so is the case with Hindi. This is the reason why scoring good grades in this language paper, seems like a challenging task to them. However, for all the class 12 students who have taken Hindi Core as a subject in Class 12, paying more attention to the...

Read full article >

Economics is a subject that deals with production, distribution and consumption of goods. It deals with both aspects - qualitative and quantitative and teaches how to deal with it. A detailed study in this subject help students understand how it affects the day to day life of individuals, business, firms, governments...

Read full article >

If physics and chemistry have an enormous impact on society, then biology as a branch of science is no less. Biology is the science that deals with the study of living beings. It concerns the development, growth, distribution, structure, identification etc. of living organisms. This disciplined way of study has always...

Read full article >

As we all know, Social science as a whole has several branches such as Geography, History, Civics, Economics and many more. Each branch, that we study in school as a subject, has its own benefits, purpose and considerable value behind it. History is an academic discipline that deals with the study of the past. The main...

Read full article >

Looking for Class 12 Tuition ?

Find best Class 12 Tuition in your locality on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Find Best Class 12 Tuition ?

Find Now »

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 25 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 6.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more