Question

Identify the type of work done in the given picture; *​

Answer 1

zero work

Explanation:

Because the angle between the force applied and work done is 90°. And if the angle is 90° the work done is zero...

Thank you

Answer 2

Answer:

In the picture shown, the positive value of work is done.

Explanation:

• The dot product of force and displacement gives the work done.
• Work done can be denoted as zero, negative or positive.

The formula for the work done is:

$W=F$·$D$

$W=(D*F)*cos\alpha$

where F is applied force.

           $D$ is the displacement.

            $\alpha$ is the angle between displacement and force vector.

Step 1:

In the given picture, we see that force is applied towards the right side or towards the positive X-axis. So, the force vector is towards the positive X-axis.

The displacement of the body is also towards the positive X-axis. So, the displacement vector is towards the positive X-axis.

Step 2:

As, both the displacement and force vectors are towards the positive X-axis so, $cos\alpha$  is positive.

Hence, positive work is done in shown picture.