Application of Newtons Second Law
Challenge Problem Solutions
Problem 1: Painter on a Platform
A painter of mass m1 stands on a platform of mass m2 and pulls himself up by two ropes
that run over massless pulleys, as shown. He pulls on each rope with a fo
Problem Solving Vectors
Challenge Problem Solutions
Problem 1: Vector Addition
!
1.1 Consider the two vectors shown in the figure below. The magnitude of A = 2.88
!
and the vector A makes an angle 33.7! with the positive x -axis. The magnitude of
!
!
B =
Units and Dimensional Analysis
Challenge Problem Solutions
Problem 1: An ideal (non-viscous) liquid with a density of ! is poured into a cylindrical
vessel with a cross-sectional area of A1 to a level at a height h from the bottom. The
bottom has an openi
Problem Solving and Estimation
Concept Questions
Question 1 What is your best estimate of the volume of one breath?
1) between 1/10 and 1 liter
2) between 1 and 10 liters
3) between 10 and 100 liters
4) between 100 and 1000 liters
Answer 2. I estimate the
One Dimensional Kinematics
Challenge Problem Solutions
Problem 1: One-Dimensional Kinematics:
Two stones are released from rest at a certain height, one after the other.
a) Will the difference between their speeds increase, decrease, or stay the same?
b)
Vectors
Concept Questions
Question 1. Consider the pair of units vectors ( P , P ) located at the point P , and the
ij
pair of units vectors ( , ) located at the point S . Which of the following statements is
ij
S
S
true?
3)
!
iP iS
!
jP jS
=
i
i
4)
=
One Dimensional Kinematics
Concept Questions
Question 1 You are throwing a ball straight up in the air. At the highest point, the balls
1. velocity and acceleration are zero
2. velocity is nonzero but its acceleration is zero
3. acceleration is nonzero, b
Two Dimensional Kinematics
Challenge Problem Solutions
Problem 1:
Suppose a MIT student wants to row across the Charles River. Suppose the water is
moving downstream at a constant rate of 1.0 m/s. A second boat is floating downstream
with the current. Fro
One Dimensional Kinematics Non-Uniform Acceleration
Concept Questions
Question 1 Non-Uniform Acceleration: Terminal Velocity of Raindrop
A raindrop of initial mass m0 starts falling from rest under the influence of gravity. and
approaches a constant termi