Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the table is 0.400. The objects have masses of m1 = 4.25 kg, m2 = 1.25 kg, and m3 = 1.90 kg, and the pulleys are frictionless. (a) Determine the acceleration of each object, including its direction. (b) Determine the tensions in the two cords. (left and right) (c) If the tabletop were smooth, would the tensions increase, decrease, or remain the same? Possible answers: The tensions in the both cords will remain the same. The tension in the left cord will decrease while the tension in the right cord will increase. The tension in the left cord will increase while the tension in the right cord will decrease.
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the table is 0.400. The objects have masses of m1 = 4.25 kg, m2 = 1.25 kg, and m3 = 1.90 kg, and the pulleys are frictionless.
(a) Determine the acceleration of each object, including its direction.
(b) Determine the tensions in the two cords. (left and right)
(c) If the tabletop were smooth, would the tensions increase, decrease, or remain the same? Possible answers:
The tensions in the both cords will remain the same.
The tension in the left cord will decrease while the tension in the right cord will increase.
The tension in the left cord will increase while the tension in the right cord will decrease.
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