F A loaded penguin sled with weight W rests on a plane inclined at an angle relative to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is ,, and the coefficient of kinetic friction is NOTE: Express your answers in terms of the given variables. Enclose arguments of functions in parentheses. For example. sin (22). (a) What is the minimum magnitude of the force F parallel to the plane, that will prevent the sled from slipping down the plane? Finin mgsin(0) - μ.mycos(0) X (b) What is the minimum magnitude of ♬ that will start the sled moving up the plane? Fup mgsin(0) + μmgcos(0) X (c) What magnitude of F is required to move the sled up the plane at constant velocity?
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.
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