(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The forearm (including the hand) has a mass of 4.26 kg. The upper arm exerts the force of 14 N on the forearm. If the forearm has an acceleration of 2.54 m/s^2, determine the mass of the object being pulled by the hand. (Assume the object slides over a frictionless surface.)

2. Relevant equations

Newton's Second Law:

Fnet=ma

3. The attempt at a solution

So I have my free bodies. With the arm, I have the three forces of Normal, Tension, and Mass, and with the object, the same three forces. I don't know if these are right so that might be why I'm stuck.

Assuming that those free bodies are right, I am unsure of what equations (Newton's Second Law) to write down and use or what approach to take towards this problem.

Any Help Would Be Great

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Finding the Mass of An Object as It Slides Over a Frictionless Surface

**Physics Forums | Science Articles, Homework Help, Discussion**