Question

man uses 5m long crowbar to raise a load of 100N.Find the effort , if fulcrum is located at 2m From the effort .​

Answer 1

Given,

Crowbars are Class (I) Lever,

Total Length = 5 m

Load (L) = 100 N

Effort Arm = 2 m

Load Arm = (5-2) m

= 3 m

M.A = Effort Arm/Load Arm

= 2/3

= 0.67

M.A = Load/Effort

0.67 = 100/Effort

149.25 N = Effort

The Effort is 149.25 N.

I hope this helps.