How Do You Calculate Work and Potential Energy in Physics Problems?

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To calculate work done in lifting a 175 kg case to a height of 1.5 m, use the formula w = f x d, where force (f) is the weight of the case (mass x gravity). For the archer's scenario, potential energy can be calculated using the force exerted (100 N) and the distance drawn back (0.60 m). It's important to differentiate between the force exerted by the archer and the force stored in the string when calculating potential energy. Understanding the relationship between work and potential energy is crucial for solving these physics problems. Proper application of these formulas will yield the correct solutions.
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A 175 kg case must be loaded onto a truck that is 1.5m above the ground.
calculate work done

AND

An archer exerts a force of 100N as she draws the arrow back 0.60m.
what is the potential energy of the system before the string is released?
iam completely lost on these 2 questions we did this unit like a month ago, can somebody please help with full proper solutions?

thanks
tries:

w=fxd
=9.8x36
=353 Jfor question 2, i did
the Newtons =f
so = fxd
= answer

right formula?
 
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do you know how to calculate the work done by a constant force?
 
Start with the definition of work done. What variables are in it?
 
w = f x d

f= m x a
force is mass times acceleration

d is displacement
 
right, w = f x d. but be careful, if you are talking about the energy stored in the string, f needs to be the force of the string (not the person pulling it).

next, you need to know the relationship between potential energy and work.
 

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