Question

A force of 7 N acts on an object.
The displacement is, say 8 m, in
the direction of the force
(Fig. 11.3). Let us take it that the
force acts on the object through
the displacement. What is the
work done in this case?​

Answer 1

Answer:

The work done Here is

Explanation:

Work= force x displacement

W= f x d

W= 7 x 8

W= 56Nm / 56 J

Answer 2

Answer:

Here we are given with the value of applied force and displaces a body, for which we can say that work is done.

GiveN:

Force applied on the body = 7 N

Displacement of the body = 8 m in the direction of force.

Now we have to find the work done by the force.

The relation between the work, force & displacement,

$\rm{ \boxed{W = FS \cos( \theta) }}$

Where W is the work done

F is the force applied

And S is the displacement of the body.

So, let's start solving.

Since the displacement of the body is in the same direction of the force, we can say that angle between them is 0° :

$\rm{ \boxed{W = FS \cos( \theta) }}$

So, now the formula is W = Fs. Plugging the values to get the answer:

➝ W = FS

➝ W = 7 N × 8 m

➝ W = 56 Nm

Or Newton-metre is also known as Joules.

Work done by the force on the body:

so, answer is 56 Nm

extra information

THE FULL FORM OF Nm

is Newton meter