Question

A single movable pulley is used along with a fixed pulley to raise a load of mess 15 kg Assuming it to be an ideal machine obtain the values of (a) the VR. (b) the MA. (c) efficiency

Answer 1

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Answer 2

(a) the VR. = 2

(b) the MA. = 2

(

Because a single fixed and movable pulley have

L=2T & E=T

So, MA= L/E

MA= 2T/T

MA= 2

and we know that in an ideal machine

MA=VR

MA=VR=2

)

(c) the efficiency = 1 or 100%

η=MA/VR

η=2/2

η=1