1.

Work Power depends onthe time in whichenergy is spent.3. S.I. unit of power iswatt (W).moves a body throughm in the direction ofthe work done by the= 10 kg= 100 NX 8 m= 800 J5. A body of mass 5 kg is taken from aheight of 3 m to 6 m. Find the increasein the potential energy of the body.Take g = 10 N kg.Solution : Given, m = 5 kg, h, = 3 m, h = 6 m,g = 10 N kgIncrease in potential energy= mgh, - mgh= mg (hh)= 5 x 10 x (6-3) J= 200 N, d = 2 m= 150 Jaculls fromSmt. RAMDEVI SOBHRAJ BAJAJ ARYA VIDYA MANDIR JUHUStd 8NumericalsPhysicsForce and pressureQ.2 The moment of a force of 25 N about a point is 2.5 N m. Find the perpendicular distance offorce from that pointnit hinnhan-minimum​

Answer»

a body is 5 kg.The body is taken from a height of 3 m to 6 m.Gravitational acceleration (G) = 10 m/s²The INCREASE in POTENTIAL energy of the body.As we know that, ☛ Potential energy of a body is given as,☛ And increase in potential energy of a body (which DENOTES the height factor) is given asWhere,h₁ = 3 mh₂ = 6 m➠ P.E = 5 × 10 × (6 - 3)➠ P.E = 5 × 10 × 3➠ P.E = 150 Joules∴ The increase in potential energy of the body is 150 J.



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