Since , resistances are joined in parallel , potential difference across either of R₁ or R₂ will be same , and it will be equal to emf of the cell provided no internal resistance exists in the cell.
Since potential difference across R₁ is equal to emf and resistance is R₁ , current through it too will be same as that in the previous case.
Mass of the object m = 2.9 kg Force F1 = 28.449 N F1 = m1 x a => a = F / m => 28.449 / 2.9 => a = 9.81, which is gravitational acceleration. In the same lab, a = g = 9.81, second object F2 = 48.7N = m2 x a m2 = F2 / a => 48.7 / 9.81 => m2 = 4.96 kg Mass of the second object m2 = 4.96 kg
