# Simple Machines and Levers

1.Which Simple Machine Is Used to Make a Pizza Cutter?

A wheel and axle are used to make a pizza cutter.

2.A Wheel and a Rope Make Which Simple Machine?

A wheel and a rope together make a pulley.

3.A Ceiling Fan Comprises Several Simple Machines. Name Them.

A ceiling fan comprises the following simple machines—

• Wheel and axle: The shaft and the base of the fan.
• Inclined plane: Blades of the fan.
• Screw: The points from where the fan is attached to the ceiling.

4.The Floor of a Bathtub Is Like an Inclined Plane. Do You Agree With This Fact? If Yes, Give the Reason for Your Answer.

Yes, the floor of a bathtub resembles an inclined plane.
Thus, the water reaches a point from where it can be drained out of the bathtub.

5.A Ceiling Fan Comprises Several Simple Machines. Name Them.

Which Simple Machine Is Found in the Shoelaces of Your Shoes?

Shoelaces are like a rope and pulley system. The eyes of the shoes where the shoe laces are threaded act like a pulley. The shoe laces act like a rope.

6.The Construction of a Ladder Is Based on Which Simple Machine?

Which Simple Machine Is Found in the Shoelaces of Your Shoes?

• The construction of a ladder is based on an inclined plane.

7.Which Simple Machine Is Used in a Window Blind?

Rope and pulleys are used to make a window blind.

8.A Toilet Paper Roll on a Spinning Holder Resembles Which Simple Machine?

A toilet paper roll on a spinning holder resembles a wheel and axle. The axle is the main axis of the holder, whereas the circular surface on which the toilet paper rolls is the wheel.

9.Which Simple Machine Is Used to Make a Door Stopper?

A wedge is used in making a door stopper.

10.Broom Is an Example of Which Class of Lever?

• Broom is an example of a third-class lever.
• The fulcrum is the tip where the broom's sticks are joined together.
• The point from where we hold it is the effort, and the region of the broom which is used to clean the surface is the effort.