Question

2. In case of lever of second order load arm is (a) always longer than the effort arm (b) always smaller than the effort arm (c) always equal to the effort arm (d) is sometimes bigger and sometimes smaller than the effort arm
3. A staircase is an example of : (a) lever (b) wedge (c) inclined plane (d) wheel and axle​

Answer 1

Answer:

In a second order lever, the effort arm is always than the load arm.

Stairs are an example of an inclined plane.

Answer 2

Answer:

2

b always smaller than the effort arm

3

c inclined plane

Explanation:

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