Calculate the effort needed when load = 800 N, load arm = 0.8 m and effort arm = 4.0 m

Open in App

Solution

Step 1, Given data
Load = 800 N
Load arm = 0.8 m
Effort arm = 4 m
Step 2, Finding the effort needed
From the principle of the lever
We know,
$E f f o r t \times E f f o r t a r m = L o a d \times L o a d a r m$
Putting all the values
$E f f o r t \times 4 m = 800 N \times 0.8 m$
After solving
$E f f o r t = 160 N$
Hence the effort needed is 160 N.

Suggest Corrections

Similar questions

Calculate the effort needed when load arm = 50 m, effort arm = 125 m and load = 100 kg wt

Calculate the load, which can be overcome by an ideal machine, when effort = 100 N, effort arm = 60 cm, and load arm = 15 cm

A worker uses a crowbar to move a boulder of weight 100 kg wt. If the length of the crowbar is 2 m and the effort arm is 0.3 m, then write the following steps in sequential order to find the effort needed to be applied.

(A) Find the load, effort arm, and length of the crowbar from the given data.

(B) Use the principle of the lever, i.e., load × load arm = effort × effort arm.

(D) Substitute the values in the above formula and find the effort required.

A man uses a crowbar of length 1.5m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance of 1m from his hand. The load is at the opposite end of the effort. Calculate (i) load arm (ii) effort arm (iii) mechanical advantage and (iv) the effort needed.

Calculate the mechanical advantage of a lever when load arm = $15 c m$ and effort arm = $30 c m$ .

Join BYJU'S Learning Program

Calculate the effort needed when load = 800 N, load arm = 0.8 m and effort arm = 4.0 m

Step 1, Given dataLoad = 800 NLoad arm = 0.8 mEffort arm = 4 mStep 2, Finding the effort neededFrom the principle of the lever We know,Effort×Effortarm=Load×LoadarmPutting all the valuesEffort×4m=800N×0.8mAfter solving Effort=160NHence the effort needed is 160 N.