Home › CBSE Class 9 › physics › c9potentialconservation › Per NCERT, in the formula U = mgh, what is the V…
Per NCERT, in the formula U = mgh, what is the VALUE of g (acceleration due to gravity) on Earth — typically used in calculations?
AAbout 9.8 m/s² (often rounded to 10 m/s² in school problems)
BAbout 1 m/s²
CZero
DAbout 100 m/s²
Answer & Solution
Correct answer: A. About 9.8 m/s² (often rounded to 10 m/s² in school problems)
Per NCERT, g ≈ 9.8 m/s² (or 10 m/s² for simplification in school examples). The other options misstate.
Related questions
Per NCERT, when a ball is in FREE FALL from height h, at what point during the fall is itsPer NCERT, why does a REAL pendulum eventually slow down and stop — even though conservatiPer NCERT Activity 7.2 (the simple pendulum), why does the pendulum bob REACH ALMOST THE SPer NCERT Example 7.8, what is the velocity of a child at the BOTTOM of a frictionless sliPer NCERT, an object falling FREELY from height h (released from rest) — what is the velocPer NCERT, the CONSERVATION OF MECHANICAL ENERGY principle states which fact?Per NCERT, MECHANICAL ENERGY is defined as which combination?Per NCERT Activity 7.1 (heavy ball dropped onto sand from different heights), how does the