Question

how much work is done while walking 5.0 m holding an object with mass of 3.0 kg ?​

Answer 1

$\huge \sf {Question :-}$

how much work is done while walking 5.0 m holding an object with mass of 3.0 kg ?

$\huge \sf{Answer :-}$

Work is said to be done when force is applied on a body and the body shows displacement.

In this case the force is applied on the object but there is no displacement of it. Hence no work is said to be done.

Answer 2

Answer:

The work finished whilst taking walks 5.0 m whilst conserving an object with a mass of three kg is 147.15 Joules (J).

Explanation:

From the above question,

Power is the rate at which work is done.

          Power = $\frac{Work}{Time}$

                   P = $\frac{W}{t}$

                   P = $\frac{Fd}{t}$

SI unit of power are watts (1 watt = 1 jule / s)

Work = Force x Distance

The pressure required to maintain an object with mass of three kg is given by:

                         Force = mass x gravity

where gravity is the acceleration due to gravity, which is about 9.81 m/s².

                         Force = three kg x 9.81 m/s²

                                    = 29.43 N

Therefore, the work accomplished whilst taking walks 5.0 m whilst maintaining the object is:

         Work = Force x Distance

                   = 29.43 N x 5.0 m

                   = 147.15 J

So, the work finished whilst taking walks 5.0 m whilst conserving an object with a mass of three kg is 147.15 Joules (J).

Work is said to be done when force is applied on a body and the body shows displacement. In this case the force is applied on the object but there is no displacement of it. Hence no work is said to be done.

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