The effort in a class 1 lever is in __________ direction(s).

Question

Question

This question was previously asked in

RRB ALP Fitter 23 Jan 2019 Official Paper (Shift 3)

Answer 1

Explanation:

A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum, used to transfer a force to a load and usually to provide a mechanical advantage.
On the basis of the locations of fulcrum, load, and effort, the lever is divided into three types.

First Class Lever

First-class levers have the fulcrum between the force and the load.
Effort and the load move in opposite directions.
The effort in a class 1 lever is in one direction.
Examples: See-saw, crowbar, scissors, claw and hammers, the handle of water pump, a beam balance, wire cutter, plier, etc.

Second-class lever

In second-class levers, the load is between the effort (force) and the fulcrum.
Effort and the load moves in the same direction.
Examples: Wheelbarrow, Staplers, Bottle openers, Nutcrackers, and Nail clippers.

Third-class lever

Lever 2dec1mm