(b) rope 59. A 15.0-lb block rests on a horizontal floor. (a) What over a pul- free-hanging 10.0-b force does the floor exert on the block? is tied to the block and is run vertically ley. The other end is attached to a object. What now is the force exerted by the floor on the 15.0-lb block? (c) If the 10.0-lb object in part (b) is replaced with a 20.0-lb object, what is the force exerted by the floor on the 15.0-lb block?
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 horizontal floor. (a) What
69. A 15.0-lb block rests on
force does the floor exert on the block? (b) A rope
over a pul
is tied to the block and is run vertically
ley. The other end is attached to a
free-hanging 10.0
object. What now is the force exerted by the floor on the
15.0-lb block? (c) If the 10.0-lb object in part (b) is replaced
with a 20.0-lb object, what is the force exerted by the floor on
the 15.0-lb block?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb4275793-d0d9-4c18-8132-1bc68d69e927%2Fbcd01fb5-7fcd-423c-9a57-87d6c973f58f%2F8o4okk_processed.jpeg&w=3840&q=75)
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