Hi two phys prob about Newton's law

[stanton]

http://www.webassign.net/sercp/p4-62alt.gif (Figure P4.62)

Three objects are connected by light strings as shown in Figure P4.62. The string connecting the m1 = 5.00 kg mass and the m2 = 4.00 kg mass passes over a light frictionless pulley.
a) find the acceleration of each object and
b) the tension in the two strings

prob 2.A 3kg object hangs at one end of a rope that is attached to a the ceiling of a railroad car. When the car accelerates to the right, the rope makes an angle of 4 degrees with the vertical. Find the acceleration of the car.
5 minutes ago - 4 days left to answer.

prob 1 answer: Acceleration:1.63m/s^2
t1:54.2 t2:24.5
prob 2 answer:0.69m/s^2

 

[rl.bhat]

According to PF rules, you have to your attempts before you seek our help.
In prob. 1, what are forces acting on each mass?