Match the following. 1 . Car (a) fixed point 2 . Bottle opener (b) wedge 3 . Pulley (c) complex machine 4 . Needle (d) changes the direction of force 5 . Fulcrum (e) 2 nd class lever

A car is an example of complex machine. Complex machine is a combination of two or more simple machines and has a number of parts. A bottle opener is a second class type lever. In this class, load (L) lies in between fulcrum (F) and effort (E). A pulley is a simple machine which is used to lift heavy loads very easily. It changes the direction of force and hence makes it easy to lift heavy loads. A needle is an example of wedge. Wedge is a simple machine which works on the principle of an inclined plane. Fulcrum is a fixed point in a lever. 1. Car (c) complex machine 2. Bottle opener (e) 2 nd class lever 3. Pulley (d) changes the direction of force 4. Needle (b) wedge 5. Fulcrum (a) fixed point

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New Trends in Science>Chapter 11 - Machines>Exercise>Q C

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Computer is a simple machine.

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Important Questions on Machines

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New Trends in Science>Chapter 11 - Machines>Exercise>Q C

The wheel and axle together form a simple machine.

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New Trends in Science>Chapter 11 - Machines>Exercise>Q C

There are two classes of levers.

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New Trends in Science>Chapter 11 - Machines>Exercise>Q D

Match the following.

$1$ . Car	(a) fixed point
$2$ . Bottle opener	(b) wedge
$3$ . Pulley	(c) complex machine
$4$ . Needle	(d) changes the direction of force
$5$ . Fulcrum	(e) $2$ nd class lever