33-131
Matter & Interactions I
Fall 2012
Assignment 10 Solutions
8.S44. A scattering experiment is to be set up to bounce projectiles of mass m o targets of
mass 10m. The targets are initially at rest
33-131
Matter & Interactions I
Fall 2012
Assignment 7 Solutions
5.C10. A force F acts on extended object of mass M as it moves through a distance D. The
object starts from at rest. After the object ha
33-131
Matter & Interactions I
Fall 2012
Assignment 6 Solutions
4.S42. The escape speed of an asteroid whose radius is 10 km is 10 m/s. (a) What is the mass
of the asteroid? (b) A 20 kg object is thro
33-131
Matter & Interactions I
Fall 2012
Assignment 4 Solutions
3.C22. A an object of mass m is held up by two rods of dierent length as shown in Figure ?.
(a) In terms of m, g , and , what are the te
33-131
Matter & Interactions I
Fall 2012
Assignment 2 Solutions
1.C42. An object is initially moving in the x direction with momentum p = 8 kg m/sx. A
constant force, F = 7 N x +5 N y , acts on the ob
33-131
Matter & Interactions I
Fall 2012
Assignment 8 Solutions
a
a
a-b
b
Figure 1: The spherical shell for problem 7.C3.
7.C3. The moment of inertia of a uniform sphere of mass m and radius r about i
33-131
Matter & Interactions I
Fall 2012
Assignment 9 Solutions
ra
rb
M,I
rb
ra
F
M,I
Figure 1: A disk being pulled across a rough surface by a string wound around its hub for problem
7.C23.
7.C23. An
33-131
Matter & Interactions I
Fall 2012
2.C11. A bug is hovering over a highway when it is struck by the windshield of a moving car.
(a) Considering the Earth, the bug and the car as relevant objects
Work each of the following problems on your white board. When you have completed a
problem, please have an instructor come and sign o that you have done it correctly.
m1 m2
r2
G = 6.67 1011 N m2 /kg 2
33-131
Matter & Interactions I
Fall 2012
Assignment 11 Solutions
9.C13. Helium gas is produced from the radioactive decay of Uranium and Thorium inside
the Earth. The gas is a by product of natural ga
33-131
Matter & Interactions I
Fall 2012
Assignment 1 Solutions
1.C38. A subatomic particle is located at the point (3 1010 , 3 1010 , 8 1010 ) m. (a)
What is the vector r that goes from the origin to