For each hook-up (figure b), determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.

Solution:

Given, the figure represents the work done by each hook-up.

We have to find a single repeater machine.

A repeater machine is a hypothetical machine which automatically enlarges items several times.

We know that, when two machines are hooked up their stretching power is multiplied.

Stretching power = (× 2³) × (× 3²)

= 2³ × 3²

We know, 2³ = 8

Also, 3² = 9

= 8 × 9

= 72

Therefore, there is no single repeater machine that will do the same work.

✦ Try This: For each hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 12

NCERT Exemplar Class 8 Maths Chapter 8 Problem 160(b)

For each hook-up (figure b), determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.

Summary:

There is no single repeater machine that will do the same work as the given hook-up.

☛ Related Questions:

• For each hook-up (figure c), determine whether there is a single repeater machine that will do the s . . . .
• For each hook-up (figure d), determine whether there is a single repeater machine that will do the s . . . .
• For each hook-up (figure e), determine whether there is a single repeater machine that will do the s . . . .