Question

A lever has efficiency 60% and Mechanical advantage 3 then,​

Answer 1

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.....