Which of the following statement is not true about machines?

Physics

2 answers:

viva [34]3 years ago

4 0

The answer to this question is D or the last one

tester [92]3 years ago

4 0

The machine can affect the productivity in various ways.

The work done by a substance is is product of force and displacement.

Mathematically Work done W = FS where F is the force and S is the distance travelled.

The most significantly machine changes the direction of force which is required to carry out the required work.By doing so, the machines can lessen or increase the force needed for the work.We may say that the machines change the size of the force.

A machine can affect the work done by changing the way in which the work is done.The vice versa is not true.The machine can not decrease the amount of work that is done

Hence the correct option will be the last one i.e machines decrease the amount of work that is done.

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Someone please help with this

SSSSS [86.1K]

Answer:

<em>The new force is 2/3 of the original force</em>

Explanation:

<u>Coulomb's Law </u>

The electrical force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

$\displaystyle F=k\frac{q_1q_2}{d^2}$