A student suspends a chain consisting of three links, each of mass m = 0.250 kg, from a light rope. The rope is attached to the top link of the chain, which does not swing. She pulls upward on the rope, so that the rope applies an upward force of 9.00 N to the chain. (a) Draw a freebody diagram for the entire chain, considered as an object, and one for each of the three links. (b) Use the diagrams of part (a) and Newton’s laws to find (i) the acceleration of the chain, (ii) the force exerted by the top link on the middle link, and (iii) the force exerted by the middle link on the bottom link. Treat the rope as massless.
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.
A student suspends a chain consisting of three links, each of mass
m = 0.250 kg, from a light rope. The rope is attached to the top link of
the chain, which does not swing. She pulls upward on the rope, so that
the rope applies an upward force of 9.00 N to the chain. (a) Draw a freebody
diagram for the entire chain, considered as an object, and one for
each of the three links. (b) Use the diagrams of part (a) and Newton’s
laws to find (i) the acceleration of the chain, (ii) the force exerted by the
top link on the middle link, and (iii) the force exerted by the middle link
on the bottom link. Treat the rope as massless.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
