Two masses are connected by a cord that passes over a pulley as shown in the figure. The pulley and cord have negligible mass and 
(2.0 kg) moves on a horizontal surface without friction, 
(2.0 kg) is suspended vertically. What is the acceleration of 
?
A. 3.9 
B. 12
C. 6.0
D. 4.9
D. 4.9
You might also like to view...
Conservation of Momentum: A 1200-kg ore cart is rolling at 10.8 m/s across a flat friction-free surface. A crane suddenly drops 858 kg of ore vertically into the cart. How fast does the cart move just after being loaded with the ore?
A. 6.30 m/s B. 3.80 m/s C. 4.20 m/s D. 5.70 m/s
The toy drinking bird nicely illustrates
A) evaporation. B) condensation. C) both of these D) neither of these
Series/Parallel Circuits: A certain 20-A circuit breaker trips when the current in it equals 20 A. What is the maximum number of 100-W light bulbs you can connect in parallel in an ideal 120-V dc circuit without tripping this circuit breaker?
A. 11 B. 17 C. 23 D. 27
Short-period comets, such as Halley's Comet, are believed to come from the ______________
Fill in the blank(s) with correct word