Question

Stan does 178 J of work lifting himself 0.5 m. What is Stan’s mass? The acceleration of gravity is 9.8 m/s 2 . Answer in units of kg

Answer 1

Answer:

The mass is 36.33 kilograms.

Explanation:

The work is defined as the force needed to move an object a certain distance, if there's no change of position, there's no work.

In this case, the work is defined:

$W=Fd$

Where $F$ is the weight defined with the following equation

$F=W=mg$

Now, we'll replace all given values and solve for $m$:

$W=mgy\\178=m(9.8)(0.5)\\m=\frac{178}{4.9}=36.33 kg$

Therefore, the mass is 36.33 kilograms.

Answer 2

Work= (force)(distance)
178= m(9.81)x0.5
178=m(4.905)
178/4.905=m

His mass is 36.3 kg