A block of mass m is on an inclined ramp. The ramp makes an angle θ with respect to the horizontal, as shown. The ramp has friction, with coefficient of kinetic friction μk and static friction μs. This experiment takes place on earth. The block has an initial speed of v up the ramp. It travels a distance d along the ramp before it stops. Answer using variables, please. a) Draw a free body diagram clearly showing all the forces acting on the block while it is moving up the ramp. b) Calculate the work done by the Normal force as the block travels the distance d. Is it positive, negative, or zero? c) Calculate the work done by the Weight force as the block travels the distance d. Is it positive, negative, or zero?
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.
angle θ with respect to the horizontal, as shown. The ramp has
friction, with coefficient of kinetic friction μk and static friction μs.
This experiment takes place on earth.
The block has an initial speed of v up the ramp. It travels a
distance d along the ramp before it stops.
Answer using variables, please.
a) Draw a free body diagram clearly showing all the forces acting on the block while it is moving
up the ramp.
b) Calculate the work done by the Normal force as the block travels the distance d.
Is it positive, negative, or zero?
c) Calculate the work done by the Weight force as the block travels the distance d.
Is it positive, negative, or zero?
d) Calculate the work done by the Friction force as the block travels the distance d.
Is it positive, negative, or zero?
e) If the block comes to rest, how far has it travelled?
Use the work-energy principle and your results of parts b), c), and d).
f) Briefly (one sentence) explain why this problem could not be solved using conservation of
energy.
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