Dear friends, Please read our latest blog post for an important announcement about the website. ❤, The Socratic Team

If 2.0 J of work is done in raising a 180g apple, how far is it lifted?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

16
UmAir.A Share
Jun 25, 2016

Answer:

1.14 meters

Explanation:

You have already learned that work and energy have same units i.e. Joule (J).

If the object has travelled some distance (upwards) then there must be some potential difference (increased potential energy).

Thus the energy needed to lift the ball can be found by this formula:

#E_p# = #m*g*h#

Where #E_p# means potential energy needed (or simply work done). m stands for mass, g for gravitational energy, and h for the height reached.

Now we know the energy(2 J), the mass (0.18 kg), and gravitational energy (9.8 m/s^2). Putting into the formula we get:

#2 = 0.18 * 9.8 * h#

#2/(0.18*9.8)=h#

#2/1.76=h#

#1.14=h#

Finally,

height reached above the ground = 1.14 m

Was this helpful? Let the contributor know!
1500