Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

If an object weight becomes zero if it is free fall then why a person gets hurt when it falls from a height?
Asked by | 10 Aug, 2012, 11:31: PM
Expert Answer
Weight is different from mass.
Weight is the force on a reference plane exerted by a body when acted upon by a force called gravity.
In this case since the man does not exert any force on the ground or any weighing scale (as the weighing scale would also be simulataneously falling due to gravity) his weight is zero but he do have a finite mass and hence will have a momentm change and hence he will be hurt when he falls.
Answered by | 11 Aug, 2012, 01:49: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 9 - Physics
why pressure increases with depth in fluid
Asked by sknv159357 | 05 Jan, 2023, 08:29: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
what is the weight of an object at the centre of the earth 
Asked by advscjaglan | 09 Aug, 2022, 08:22: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
what is Newton's contribution on gravitation?
Asked by munendramishra478 | 12 Jul, 2022, 08:42: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
bhai a liquid used to operate the break in a car
Asked by sumantk60559 | 10 Jun, 2022, 07:18: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
two satellites of a planet have period 32 day and 256 days if the radius of orbit of former is R, find the orbital radius of the letter
Asked by rk7213908 | 31 Mar, 2022, 12:28: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
weight of the body is zero in free fall why?
Asked by rk7213908 | 21 Feb, 2022, 04:48: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
my doubt is the value of G is 60673multiply10-11power but why we use some no in some different numericals like use of 6.6, some times 6.7 why please ans this ques now 🙏
Asked by mannatjohn920 | 15 Feb, 2022, 09:57: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
Find the force of gravitational attraction between the earth (m = 6 x 1024 kg) and 80 kg man if he is standing at sea level. The distance of man from earth's center is 6.38 x 106 m.
Asked by sudiptaroy0607 | 08 Jan, 2022, 04:59: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
why iron nail sink in water while a boat floats
Asked by princemodi2580 | 31 Dec, 2021, 07:06: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
a stone is released from the top of the tower of height 19.6 m calculate its final velocity just before touching the ground
Asked by mj2692076 | 31 Dec, 2021, 04:11: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Free Sample Papers - Click Here
×