Two blocks of masses 20 kg and 8.0 kg are connected together by a light string and rest on a frictionless, level surface. Attached to the 8.0-kg mass is a second light string, which a person uses to pull both blocks horizontally. If the two-block system accelerates at 1.0 m/s2, what is the tension in the second string attached to the 8.0-kg mass?
a. 14 N
c. 28 N
b. 6.0 N
d. 4.0 N
C
You might also like to view...
To reach the nearest known exoplanet using current technology would take:
A) a matter of months. B) 4.4 years. C) about a century. D) about 40,000 years. E) close to a million years.
About 90% of UFO sightings
A) are hoaxes B) cannot be explained C) are real sightings of alien craft D) can be explained by natural phenomena
A Carnot engine operating between a reservoir of liquid mercury at its melting point (233 K) and a colder reservoir extracts 10.0 J of heat from the mercury and does 8.0 J of work during each cycle. What is the temperature of the colder reservoir?
A) 47 K B) 186 K C) 163 K D) 207 K
This figure is a diagram of a multiflash image of an air puck moving to the right on a horizontal surface. The images sketched are separated by equal time intervals, and the first and last images show the puck at rest. In figure b, which color graph best shows the puck’s position as a function of time?