Haseeba Raziq on Nearpeer MDCAT Common Room
Aoa sir Sir gravitational potential energy ka sign negative hota hain hamasha ya positive bhi ho sakhta hain qk textbook ji statement hain that "it is work done against gravity so it's value is always taken as negative" aur quiz main positive, negative and zero a raha tha tou please explain karda ka is ka concept kya hain From work and energy unit
Haseeba Raziq · 2026-07-11T06:54:30.949Z
Thank you so much... Jazakallah... But U mean above infinity when work is done so GPE become positive? lekin above infinity tou hota hi nahi hain and max Value we can get for it is zero that is non negative... as per my understanding
Mansoor Farooqi · 2026-07-13T19:41:28.664Z
Against the field work -ve hota. In Potential energy hum -ve work krty... Ab depend krta k wo work poch rha h ya energy
Kazim · 2026-07-11T05:27:17.303Z
Kyunke reference point infinity hai. Infinity (Above earth) 0 hoga. Below 0 is negative, above is positive. Jab ham earth ki surface se object ko infinity tak lekar jaa rhe hote hain, toh usko energy dete hai jiski wajah se G.P.E starts bvecoming LESS negative up until reference point (infinty) where it reaches 0 and usse upar jitna work karein ge woh Positive G.P.E bane ga. So, TLDR: Negative is below infinity (Object is bound to gravity), Positive is above infinity (Object is not bound by gravity), Zero is at infinity (reference point)