Physics 191
Tutorial 2-D Dynamics
1. The 45 kg block below is pulled and accelerated over a rough (k = .44) horizontal surface.
F = 240 N
25
a) Find the acceleration
b) Find the force required to pull it at 2.8 m/s2 .
2. The 85 crate below is carried hori
Physics 191
Tutorial - Parallel and Perpendicular Axis Theorems
1. Determine the expression for the moment of inertia for each of the following:
a) A disk (with M, R) with a
b) A sphere (with M, R) with a
tangential axis
perpendicular, tangential axis
c)
Physics 191
Tutorial - Equilibrium and Center of Mass
1. The 7 kg corner bracket below is 1 m long on each side, with each piece 24 cm wide. It is
held by a hinge at the bottom corner and a heavy wire at the top corner, and supports a 5 kg
mass placed 20
Physics 191
Tutorial - 2-D Kinematics, General Motion
1. When a car travelling 15 m/s at 35 N of E accelerates at 3.2 m/s2 at 60 N of E for 8.0
seconds
a) Find the net displacement
b) Find the final velocity
2. In the x-y plane a particle with an initial
Physics 191
Tutorial - Circular Motion and Centripetal Acceleration
1. A 2.5 kg rock is attached to a 75 cm long string.
a) Calculate the tension in the string when the rock moves in a horizontal circle with
a tangential velocity of 15 m/s.
b) Calculate t
Bouncing Ball - 9.40
December-22-12
5:13 PM
A 200g ball is dropped from a height of 2.0m and bounces on
a hard floor. The force on the ball from the floor is shown
below. How high does the ball rebound?
Chapter 9 Page 1
Inelastic collision 9.28
December-2
BASIC RULES FOR UNCERTAINTY CALCULATIONS
Types of uncertainties:
1) An Absolute Uncertainty is denoted by the symbol and has the same units as the
quantity.
2) A Relative or Percent Uncertainty is denoted by the symbol and has no units.
To convert back an
Momentum Multiple Choice
1.
A 30.00 kg mass falls from a height of 4.000 m. The momentum of the mass just before it hits the ground
is
A. 144.2 kg m/s.
B. 187.8 kg m/s.
C. 320.0 kg m/s.
D. 442.4 kg m/s.
E. 502.1 kg m/s.
2.
A 3.000 kg ball is pitched with
Electrostatics - Coulombs Law
Example:
Two equal charges 25 mm apart exert forces of 3 x 10-6 N on each other.
Determine the magnitude of the charges.
[ .456 nC ]
Example:
An electron orbits a proton with a speed of 2.0 x 106 m/s. Find the radius of
the o
Physics 191
Practice Final Exam
1. a) Given the vectors in the figure below, find A + B C in polar form.
y
A 12.0 N
50
x
30
C 8.0 N
B
15.0 N
20
b) For the following two vectors:
d = 275 m at 30 North of East
F = 640 N at 85 North of East
i) determine th
Physics 191 Tutorial Torques and Equilibrium
1. For the 1 m long, 5 N beam below find the balancing mass m and the supporting tension T.
m T 2 kg
0
25 cm
1m
2. A 6.0 kg board rests on two supports, one at the left end and the other positioned at 2/3 of th