Question

4. A lever of first order has a total length of 3 m and is able to lift a load of 60 N with a force
of 30 N. Find the position of the fulcrum.​

Answer 1

Explanation:

Given data :

load= 60 N

Effort (force) = 30N

Let ".x " be the distance of fulcrum

from the load

Now

Effort arm= (3-x)

We know that

Load× load arm = Effort × Effort arm

60×= 90-30 x

90x= 90

x = 90/90 =1

Therefore, position of the fulcrum is 1 m from the load .

Answer 2

Answer:

Explanation:

Given data :

load= 60 N

Effort (force) = 30N

Let ".x " be the distance of fulcrum

from the load

Now

Effort arm= (3-x)

We know that

Load× load arm = Effort × Effort arm

60×= 90-30 x

90x= 90

x = 90/90 =1

Therefore, position of the fulcrum is 1 m from the load