Question

Match the columns.

Column 1	Column 2
Lever of the first order	Screwdriver
Lever of the second order	Flyovers
Lever of the third order	Knife
Inclined plane	A mango cutter
Wedge	Nuts and bolts
Pulley	Human arm
Wheel and axle	Claw hammer
Screw	Flagpole

Answer 1

Part 01:

1. The lever of a first-order is a simple machine in which the fulcrum is between load and effort.
2. A claw hammer is an example of a claw hammer.
3. Thus (A)- (VII)

Part 02:

1. The lever of a second-order is a simple machine in which load is between fulcrum and effort.
2. A mango cutter is an example of a second-order lever.
3. Thus (B)- (IV)

Part 03:

1. The lever of the third order is a simple machine in which effort is between load and fulcrum.
2. The human arm is an example of a third-order lever.
3. Thus (C)- (VI)

Part 04:

1. An inclined plane is nothing but a slop over which a load can be pushed up easily.
2. A flyover is an example of an inclined plane.
3. Thus (D)- (II)

Part 05:

1. A wedge is a simple machine that looks like a ramp or inclined plane. It can be made of wood, plastic, or metal. Wedges are used for cutting, splitting, tightening, or holding back two objects.
2. A knife is an example of a wedge.
3. Thus (E)- (III)

Part 06:

1. Pulley is a simple machine that consists of a wheel with a grove, and a rope passing through the groove.
2. Pulley does not increase the force but it changes the direction of the force.
3. A flagpole uses a pulley system to raise a flag.
4. Thus (F)- (VIII)

Part 07:

1. A wheel is not a machine but when it is attached to a rod it becomes a simple machine known as a wheel and axle.
2. For instance, a screwdriver.
3. Thus (G)- (I)

Part 08:

1. A screw is a nail with groves in it.
2. A screw increases force.
3. Therefore nuts and bolts use grooves to increase force.
4. Thus (H)- (V)

Hence the right answer is (A)- (VII), (B)- (IV), (C)- (VI), (D)- (II), (E)- (III), (F)- (VIII), (G)- (I), (H)- (V)