The coefficient of friction between blocks is us = 0.4, at what angle will the block start sliding if it is initially at rest? (refer to image) Solution Let us obtain the net force in the axis perpendicular to the inclined plane. By virtue of the first law of motion (equilibrium), the net force is F perpendicular = n - Fgperpendicular = _______ Thus, the normal force is n = m____cos_____ On the axis parallel to the inclined, the net force is F|| = Fg|| - fs,max = ______ Substituting the forces, we get the following: mg______ -_______smg________= __________ By simplifying, we get the following: tan(theta) = mus Thus, the angle that the object will slide is:__________ (rounded of to the ones
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.
The coefficient of friction between blocks is us = 0.4, at what angle will the block start sliding if it is initially at rest?
(refer to image)
Solution
Let us obtain the net force in the axis perpendicular to the inclined plane.
By virtue of the first law of motion (equilibrium), the net force is
F perpendicular = n - Fgperpendicular = _______
Thus, the normal force is
n = m____cos_____
On the axis parallel to the inclined, the net force is
F|| = Fg|| - fs,max = ______
Substituting the forces, we get the following:
mg______ -_______smg________= __________
By simplifying, we get the following:
tan(theta) = mus
Thus, the angle that the object will slide is:__________
(rounded of to the ones)
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