Question

An employee uses a wheelbarrow to displace a load of 100 kg wt. If the load arm and effort arm is 1 m and 2 m, write the following steps in sequential order to find the effort applied.

(A) Substitute the values in the above formula and get the effort applied.

(B) Note the values of load, load arm, and effort arm from the given data and convert them into an S.I. system.

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

• A. ABC
• B. BCA
• C. CBA
• D. BAC

Answer 1

The correct option is B

BCA

1. For calculating the effort applied we will first note down all the data given in the question Load(L) = 100 kg, Load arm(LA) = 1 m, Effort arm(EA) = 2 m
2. After noting down all the values will apply the principle of the lever $L\times LA=E\times EA$
3. The last step will be to substitute the given values in the above formula to get the value of effort. $Effort=\frac{100\times 1}{2}=50kgwt$

Hence the correct option is (B).