Respuesta :

aayushastha06

Answer:

Here,

  • efficiency=60%
  • Mechanical advantage=3

Now,

(1) solñ..

.............

MA = L/E

or, 3 = 1000/E

or, 3E = 1000

or, E = 1000/3

.°. E = 333.33 N

(2)solñ...

.....,......

efficiency = MA/VR *100

or, 60 = 3/VR *100

or, VR = 3/60 *100

.°. VR = 5

(3)solñ..

..............

output work = L * h

=1000 * 20

=20,000

=2*10⁴J

>I hope it will helpful for you.....

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