1. A single fixed pulley is used to raise a load of 27 N from the ground to the first floor of a building. The efficiency of the system is found to be 90%. Calculate : (a) the mechanical advantage, (b) the effort applied, and (c) the frictional force experienced.

1. A single fixed pulley is used to raise a load of 27 N from the grou

1.	1. A single fixed pulley is used to raise a load of 27 N from the ground to the first floor of a building. The efficiency of the system is found to be 90%. Calculate : (a) the mechanical advantage, (b) the effort applied, and (c) the frictional force experienced.
Answer» E R :0.9E X P L A N A T I O N :for the SINGLE fixed PULLEY the value of V.R= 1M.A = efficiency * V.RM.A= efficiency ( since V.R =1) = 90/100 = 0.9

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1. A single fixed pulley is used to raise a load of 27 N from the ground to the first floor of a building. The efficiency of the system is found to be 90%. Calculate : (a) the mechanical advantage, (b) the effort applied, and (c) the frictional force experienced.​

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1. A single fixed pulley is used to raise a load of 27 N from the ground to the first floor of a building. The efficiency of the system is found to be 90%. Calculate : (a) the mechanical advantage, (b) the effort applied, and (c) the frictional force experienced.