# Masses connected by a pulley on a frictionless surface

by DLH112
Tags: connected, frictionless, masses, pulley, surface
 P: 20 1. The problem statement, all variables and given/known data A block of mass 2.6 kg (M1) lies on a frictionless surface. Its connected by a massless pulley and string hanging over the edge of the surface of 3.17 kg (M2). Calculate the acceleration of M1(part 1). calculate the tension in the cord(part 2). the cord is massless/weightless/unstretchable, theres no friction or rotational inertia in the pulley. 2. Relevant equations F=ma 3. The attempt at a solution I think the pulley transfers the vertical Fg 9.8 x 3.17 to be horizontally pulling on M1. What I'm mostly unsure of is how/if gravity/normal force/the mass of m1 affects it without friction.
 P: 20 A wrong solution I got was that the 31.066 (9.8 x 3.17) N were pulling the 2.6 Kg block horizontally, so the answer would be a = 31.066/2.6 . or a = 11.948 m/s^2 . What am I missing? I've solved this now. I didn't realize how the mass on the frictionless surface factored into the problem.
 P: 46 You still need to factor in the mass of the block off the table. Remember, you're trying to find the acceleration of the system.
P: 2

## Masses connected by a pulley on a frictionless surface

 P: 37 I am having similar troubles solving a problem exactly like this. the only difference is the masses. When the Free Body diagram is drawn, the mass of the hanging object pulls the object on the table to the right, so the force of the hanging object effects the right side of the diagram? $\uparrow$ Fn ° $\rightarrow$ hanging mass $\downarrow$ Fg