Changes

| style="height:20px; width:200px; text-align:center;" |'''A hammer is used to pull out a nail from a wall. A 30N [[force]] of effort is applied at a [[perpendicular]] distance of 0.18m from the [[pivot]]. While the nail is 0.02m away from the pivot. Calculate the [[force]] applied to the nail at this point.'''| style="height:20px; width:200px; text-align:center;" |'''A hammer is used to pull out a nail from a wall. A 30N [[force]] of effort is applied at a [[perpendicular]] distance of 19cm from the [[pivot]]. While the nail is 4cm away from the pivot. Calculate the [[force]] applied to the nail at this point.'''| style="height:20px; width:200px; text-align:center;" |'''A hammer is used to pull out a nail from a wall. A 30N [[force]] of effort is applied at a [[perpendicular]] distance of 200mm from the [[pivot]]. While the nail is 60mm away from the pivot. Calculate the [[force]] applied to the nail at this point.'''