Question

B. Write true or false. Correct the false statements.
1. There are four types of simple machines.
2. The load and the effort act at a single point in a lever.
3. A sewing needle is a wedge-type simple machine.
4. A screw is a special case of an inclined plane.
5. A single movable pulley is a pulley that has its axis of rotation fixed.
6. A rotating spindle tap is an example of a wheel-and-axle arrangement.​

Answer 1

1.false

2.false

3.true

4 false

5. true

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Answer 2

True/ False involves placing true in front of correct sentences and false in front of incorrect sentences.

• The given sentences are based on the physics concept. The sentences are -

1. There are four types of simple machines. - False - ( There are six types)

2. The load and the effort act at a single point in a lever. - False ( They both can not act as a single point)

3. A sewing needle is a wedge-type simple machine. - True

4. A screw is a special case of an inclined plane. - True

5. A single movable pulley is a pulley that has its axis of rotation fixed. - False ( A fixed pully has fixed rotation)

6. A rotating spindle tap is an example of a wheel-and-axle arrangement.​ - True