A concrete bucket weighing 65kg is hanging from a cable of negligible weight over a frictionless pulley. The bucket is connected to a distribution box with weight equal to 80kg that rests from a horizontal surface carrying a 50kg bag of gravel. If the coefficient of static and kinetic friction between the box and the surface is 0.70 and 0.40, respectively, and if the bag of gravel is picked up, find the speed of the bucket after it has descended 2m from
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 concrete bucket weighing 65kg is hanging from a cable of
negligible weight over a frictionless pulley. The bucket is connected to a
distribution box with weight equal to 80kg that rests from a horizontal surface
carrying a 50kg bag of gravel. If the coefficient of static and kinetic friction
between the box and the surface is 0.70 and 0.40, respectively, and if the bag of
gravel is picked up, find the speed of the bucket after it has descended 2m from
rest.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
