Physics Laboratory Homework
Jacob Kim
2.3
a) 5.03 0.04m
b) 2 1s
c) (-3.21 0.27) e-19 coulombs
d) (5.6 0.7) e-7m
e) 3267 42 gcm/s
2.5
The discrepancy is not significant, since there is an overlap from 134138mm.
2.8
Group Bs value is acceptable since their
Sept. 26th 2017
Lab 2: Motion in One Dimension
Purpose:
This experiment was designed to explore the relationship between the position, velocity, and
acceleration from a battery-powered toy car. A basic understanding of experiment design and
uncertainty wa
Physics Laboratory
Motion in One Dimension Quiz
1. One sample/second
2. .5m
3. The object was in a relatively motionless state from 1s to 5s, and at 5s, the object moved
in an estimated uniform velocity of .8m/s until 15s. From 15s to 19s, the object halt
Jacob Kim
Sasha Gorelik
October 3rd 2017
Lab 3: Random Uncertainties
Purpose:
The objective of this experiment was to learn how to calculate the mean, standard
deviation, standard error, and explore the difference between accuracy and precision, all throu
Jacob Kim
Sasha Gorelik
October 10th 2017
Lab 4: Distraction and Reaction Time
Purpose
The purpose of this experiment is to measure the reaction time of a person catching a half
meter stick in both non-distracted and distracted situations. For this, a bas
Physics Pre-Lab
Jacob Kim
5.36
a) Discrepancy = -2
Combined uncertainty = root(2) 1.41
b) 4.6% chance of getting a discrepancy as large as they did
As 4.6 < 5, the discrepancy is significant at 5% level.
5.47
Discrepancy (Ef Ei) = -15
Combined SD = root(3
Name: Rachel Lorenc
Lab Partner Name: Ria Oba
Date: 10/2/2017
Lab 3: The Glucometer: A Study in
Uncertainty
Purpose
a. The purpose of this lab is to get comfortable with calculating the mean,
standard deviation, and standard error (standard deviation of t
171.107 Quiz
Sept. 15, 2017
Name _
A soccer ball is kicked with an initial horizontal velocity of 3 m/s
and an initial vertical velocity of 4 m/s.
1) What is the initial speed of the ball?
2) What is the maximum height the ball goes above the ground?
3) H
171.107 Quiz
Sept. 15, 2017
Name _
Rosie is driving from Boston to Miami on I-95. She passes the
Philadelphia exit at noon and maintains a constant speed of 50
mph for the entire trip. Bob is driving in the opposite direction.
He passes the Baltimore exit
171.107 Quiz
Sept. 15, 2017
Name _
A car starts from rest at a red light. When the light turns green,
the car accelerates forward uniformly at a rate of 2 m/s 2 for 2
seconds. It then continues at a constant speed for 5 seconds,
before applying the brakes
A small block of mass m rests on the sloping side of a triangular block of mass M,
which itself rests on a horizontal table as shown below. Determine the magnitude of
the force F that must be applied to M so t
Group Problem
You have a summer job painting the outside of a
building. To do so, you must work from a from a
"bosun's" chair attached to the overhanging roof, as
shown in diagram on the right. Your body, plus the
chair and all your paint supplies, have a
1
1.1
Hot Air Balloon
Problem Statement
You are enjoying a trip high above Baltimore in a hot air balloon with total
mass (balloon plus contents ) of 300 kg. The balloon starts to descend with a
constatn acceleration of 2 m/s2 . How much ballast must you
Hot Air Balloon
You are enjoying a trip high above Baltimore in a hot-air balloon with total mass (balloon
plus contents) of 300 kg. The balloon starts to descend with a constant acceleration of 2
m/s2. How much ballast must you throw overboard to reverse
171.107 Week 2 Group Problem 3
You have a summer job painting the outside of a building. To do so, you must work from a
bosuns chair attached to the overhanging roof. Your body, plus the chair and all your paint
supplies, have a total mass of 100kg.
a) Wi
Waiting at an airport for your plane to depart you observe a child entertaining himself by
running up and down a moving walkway. He runs as fast as he can from one end to the
other in 2.5 seconds. He then turns around and runs as fast as he can back to hi
Group Problem:
A child plays with a ball a7ached to a
string. Holding the end of the string
and swinging the ball, she sets the ball
moving in a circular path of radius R in
the plane perpendicular to the gro
Group Problem: Space Odyssey
You have been hired by NASA for a futuris=c project designing a space
sta=on. The sta=on is a large wheel-like structure where people live
on the rim. To create ar=cial gravity equal
At $me t=0, a rock climber accidently allows a piton
to fall freely with constant accelera$on of 9.8 m/s2
from a high point on the rock wall to the valley below
him. The, aBer a short delay, his climbing partner
September 30, 2016
Physics 171.101/107, Midterm 1
Time allowed: 50 minutes. This is a closed book exam. Notes and calculators are NOT
allowed. Attempt problems 1-4 and write everything in INK. Be sure that you pace yourself
so that you have enough time to
September 22, 2017
Physics 171.101/107 Written Homework 3
(Due 29 September 2017)
1. (a) An astronaut lands on a newly discovered planet orbiting a nearby star. The density of
the material comprising the planet is equal to that of earth, but the radius of
September 8, 2017
Physics 171.101/107 Written Homework 1
(Due 15 September 2017, 8:00am)
1. At time t = 0, a car is a distance D from a vertical cliff face and is moving at a constant
velocity vc away from the cliff. At t = 0, the car emits a loud noise.
Group Problem:
All aboard.
You are going to Chicago for the weekend on Amtrak.
Unfortunately, you are late nishing your physics quiz, so
you arrive late at the train staDon. You run as fast as you
can, but
Physics 171.101/107 Written Homework 3:
Solution
Lingyuan Ji
October 2, 2017
1
Problem 1
1.1
(a)
On a given planet with mass M , radius R, an astronaut of mass m will find
his/her weight to be
Mm
W =G 2 .
R
Here the mass of the planet is given by the dens