Question

a crowbar having the lenght of 1.75 is used to balance a load of 500N if the distance between the fulcrum and the load is 0.5m find the effort applied to balance the load​

Answer 1

The effort applied = 200 N

Further explanation

Equilibrium :

`\tt F_1.d_1=F_2.d_2`

Total length = 1.75

The distance between the fulcrum and the load is 0.5 m ⇒ d₁=0.5 m

The distance between the fulcrum and the force applied :

`\tt 1.75-0.5=1.25~m\rightarrow d_2=1.25~m`

A load of 500N ⇒ F₁=500 N

The force applied :

`\tt 500* 0.5=F_2* 1.25\\\\F_2=(500* 0.5)/(1.25)=200~N`