20405008
Descrição
Quiz por Ryan Elwell, atualizado more than 1 year ago
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Criado por Ryan Elwell
quase 5 anos atrás
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Questão 1
Questão
Centripetal Force is a byproduct of which of Newton's Laws of Motion?
Responda
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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
Questão 2
Questão
Which of the following statements about the coefficient of friction is correct?
Responda
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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
Questão 3
Questão
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
Responda
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32
Questão 4
Questão
Which direction will the ball travel if the string breaks at this point?
Image:
Ballstring (image/gif)
Responda
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1
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2
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3
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4
Questão 5
Questão
Which of the following are true of the spring force?
Responda
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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
Questão 6
Questão
Which of the following statements is true?
Responda
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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
Questão 7
Questão
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
Responda
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1650
Questão 8
Questão
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]
Responda
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750
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N / m
Questão 9
Questão
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?
Responda
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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
Questão 10
Questão
A block is at rest on a slope. What direction does friction act?
Responda
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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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