http://www.fileden.com/files/2006/11/15/381656/My%20Documents/problem%2013.jpg [Broken](adsbygoogle = window.adsbygoogle || []).push({});

The figure above shows an arrangement with an air track, in which a cart is connected by a cord to a hanging block.

The cart has mass m_{1}= 0.600 kg, and its center is initially at xy coordinates (-0.500 m, 0 m).

The block has mass m_{2}= 0.400 kg, and its center is initially at xy coordinates (0, 0.100 m).

The cart is released from rest, and both cart and block move until the cart hits the pulley.

The friction between the cart and air track and between the pulley and its axle is negligible as is the mass of the cord and pully.

- In unit-vector notation, what is the acceleration of the center of mass of the cart-block system?
- What is the velocity of the com as a function of time
t?

so..i know that a_{com}= F_{net}/M and that i probably have to find a_{com,x}and a_{com,y}, but i'm not sure and if i do need to solve for those, how do i find the F_{net}?

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# Homework Help: Acceleration of center of mass of cart-block system

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