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Week 5-6: Complex Forces Capabilities

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Centripetal Forces, Springs, Friction, Tension and Angles
Ryan Elwell
Quiz by Ryan Elwell, updated more than 1 year ago
Ryan Elwell
Created by Ryan Elwell about 6 years ago
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Resource summary

Question 1

Question
Centripetal Force is a byproduct of which of Newton's Laws of Motion?
Answer
  • Newton's First Law
  • Newton's Second Law
  • Newton's Third Law
  • Universal Gravitation

Question 2

Question
Which of the following statements about the coefficient of friction is correct?
Answer
  • It has no units
  • It depends on mass
  • It depends on the surfaces in contact only
  • It is a higher value when objects are not in motion

Question 3

Question
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
Answer
  • 32

Question 4

Question
Which direction will the ball travel if the string breaks at this point?
Image:
Ballstring (image/gif)
Answer
  • 1
  • 2
  • 3
  • 4

Question 5

Question
Which of the following are true of the spring force?
Answer
  • It is restorative
  • It is always opposite the direction of stretch
  • It is always pulling toward equilibrium
  • It can push or pull
  • It is measured in Newtons

Question 6

Question
Which of the following statements is true?
Image:
B2f5a9b54bb74cddd67e57466fedfade53611d3d (image/svg+xml)
Answer
  • The value is zero for the y component of the T1 Force
  • The force of gravity is equal to the sum of the y components of T1 and T2
  • The force of gravity is equal to the y component of T2
  • T2 > T1

Question 7

Question
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
Answer
  • 1650

Question 8

Question
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]
Answer
  • 750
  • N / m

Question 9

Question
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?
Answer
  • x = displacement y = force
  • x = force y = gravity
  • x = distance y = displacement
  • x = distance y = time

Question 10

Question
A block is at rest on a slope. What direction does friction act?
Answer
  • There is no friction is the block is not moving
  • Friction is acting downwards into the slope
  • Friction is acting upwards, parallel to the slope
  • Friction is acting downwards, parallel to the slope
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