Homework Help: physics

Posted by m2a on Saturday, October 10, 2009 at 1:35am.

The figure below shows an object of mass M = 1,276 g. It is free to move along a horizontal, frictionless surface. This object is further connected to a second object with a mass of m = 1,362 g by means of a massless string that extends around a massless, frictionless pulley. Find the tension of the massless string.

The figure:

M is placed on a table/surface where m is hanging down with the string attaching it to M.

Thank you.

physics - bobpursley, Saturday, October 10, 2009 at 9:42am
so m is pulling M.

force equation:\

mg=(M+m)a solve for a.
Then, tension = force pulling M or M*a
physics - Rob, Monday, October 12, 2009 at 2:29pm
from the FBDs wouldnt u get
for M:
Fy = N-WM=Ma
Fx=T=Ma
for m:
Fy= T-Wm=ma
Fx= T-W=ma

then solve for a in M of Fx
and sub a into m of Fx to get T?
- physics - Rob, Monday, October 12, 2009 at 2:33pm
  Sorry i see the mistake I made
  
  for m the acceleration would be negative since its moving down

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