Question

a force of 7 Newton act on an object the displacement is 8meter in the direction of the force let us take it that the force act on the object through the displacement.what is the work done in the case?

Answer 1

Correct Question -

A force of 7 Newton acts on an object .

The displacement is say 8 m in the direction of the force .

Let us take that the force acts on the object through displacement .

What is the work done in this case ?

See the attached figure .

Solution -

In the above Question , we have the following information -

A force of 7 Newton acts on an object .

The resultant displacement is 8 m in the direction of the force .

Let us assume that the force act on the object through the displacement .

Here , we have to find the work done .

Now, we know that -

Work Done is equal to force × displacement

Or ,

$\sf{ Work \: Done = \vec{ F } \times \vec{ r } }$

Where -

F is the force acting on the object .

r is the resultant displacement .

Work Done is the cross product between the force applied and that's work done .

Hence ,

Required Work Done

=> 7 N × 8 m

=> 56 N m

=> 56 Joules .

Hence the required answer is 56 Joules ...

Answer 2

Answer:

Hope it helped u

Explanation:

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