20405008
Descripción
Test por Ryan Elwell, actualizado hace más de 1 año
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Creado por Ryan Elwell
hace más de 4 años
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Pregunta 1
Pregunta
Centripetal Force is a byproduct of which of Newton's Laws of Motion?
Respuesta
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Newton's First Law
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Newton's Second Law
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Newton's Third Law
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Universal Gravitation
Pregunta 2
Pregunta
Which of the following statements about the coefficient of friction is correct?
Respuesta
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It has no units
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It depends on mass
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It depends on the surfaces in contact only
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It is a higher value when objects are not in motion
Pregunta 3
Pregunta
What is the centripetal force acting on a 1.0 kg ball being spun in a circle with radius of 0.25 meters at a speed of 3.0 m/s?
F = [blank_start]32[blank_end] N
Respuesta
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32
Pregunta 4
Pregunta
Which direction will the ball travel if the string breaks at this point?
Image:
Ballstring (image/gif)
Respuesta
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1
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2
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3
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4
Pregunta 5
Pregunta
Which of the following are true of the spring force?
Respuesta
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It is restorative
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It is always opposite the direction of stretch
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It is always pulling toward equilibrium
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It can push or pull
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It is measured in Newtons
Pregunta 6
Pregunta
Which of the following statements is true?
Respuesta
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The value is zero for the y component of the T1 Force
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The force of gravity is equal to the sum of the y components of T1 and T2
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The force of gravity is equal to the y component of T2
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T2 > T1
Pregunta 7
Pregunta
A wooden pallet carrying a load of 600.0 kg rests on a wooden floor and the mu value is 0.280 between the two items. A forklift driver decides to push it without lifting it. What force must be applied to just get the pallet moving?
F = [blank_start]1650[blank_end] N
Respuesta
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1650
Pregunta 8
Pregunta
A spring with a natural height of 57 mm is compressed by a 300 g mass to a new height of 51 mm. What is the spring constant for this spring?
The first blank is for the numerical value. The second blank is the units. Put a space between EACH character for the units!
k = [blank_start]750[blank_end] [blank_start]N / m[blank_end]
Respuesta
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750
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N / m
Pregunta 9
Pregunta
What values should be plotted on the x and y axes of a Cartesian graph in order to provide a line whose slope will give you the spring constant?
Respuesta
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x = displacement y = force
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x = force y = gravity
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x = distance y = displacement
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x = distance y = time
Pregunta 10
Pregunta
A block is at rest on a slope. What direction does friction act?
Respuesta
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There is no friction is the block is not moving
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Friction is acting downwards into the slope
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Friction is acting upwards, parallel to the slope
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Friction is acting downwards, parallel to the slope
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