PROBLEM (.1) {25 points)
A block ofmass m : 2.0 kg is held at rest at point A on an incline
with angle 0 : 53°, as shown in the figure. The point B is at the
free end of an ideal long spring with force constant k : l2 Ntm.
The distance between A and B is
PROBLEM (1) (25 points)
!
!
Two constant forces F1 and F2 act on a 4.0-kg particle
!
moving in the xy plane. The force F1 has a magnitude of 5.0 !
F2
N and makes an angle of 37 with the positive x axis, while
!
the force F2 has a magnitude of 15 N and mak
PROBLEM 1 (25 points)
A block of mass m = 10 kg is attached to the free end of a
k
massless spring (k = 70 N/m) that has its equilibrium length, as
shown in the figure. A horizontal force FP = 200 N is applied to
FP
the block which is initially at rest. T
PROBLEM 1 (25 points)
y
A projectile is fired from the origin O with the initial speed
g
v0 = 100 m/s at an angle 0 = 53 from the horizontal. The
x
projectile just passes horizontally above a hill of height H and
!
v0
hits a point A on the other side, whi
PROBLEM 1 (20 points)
Two blocks of mass mA = 2.0 kg and mB = 8.0 kg are placed against a wall
mB
mA
as shown in the figure. A constant force of magnitude F = 5 0 N is applied to
the 2.0-kg block, making an angle = 37 with the horizontal. The
y
g
coeffici
PROBLEM (1) (25 points)
Three identical thin rods are put together to form a rigid Y shaped object with
C
three arms in a vertical plane as shown in the figure. An object of mass m w ith
a hole through its center can slide without friction on the arm BC t
PROBLEM (1) (25 points)
A
A driver wants to jump across a 90-m wide canyon with his
B
y
car. The car starts from rest at point A, travels with a constant
acceleration, moves horizontally off the cliff on the higher
g
side through point B into the air and
PROBLEM (1) (20 points)
m
A block of mass m is connected to a block of mass
by a massless string that
2
m
passes over a massles and frictionless pulley. The block
is connected to an
2
g
ideal vertical spring with spring constant k ! hich is fixed to the f
PROBLEM (1) (25 points)
A block of mass m is on an inclined plane that makes an angle 8
with the horizontal and is being pushed by a horizontal force F, as
shown in the figure. The coefficient of static friction between the
block and the inclined plane is
PROBLEM (I) ('35 points)
Tm)ft.)1ccs and [1' intro cqtml rnzrgtrittrtlcs of EU .\'. 'lhcy
arc oriomcd perpendicular to each other in tho xvrrplmrc {rs
shown in the figuro
(a) (5 ptSJ Find the (sorrrpmrcrm and the rector ('(mrpwzrarrtr of
A and 1')" Expres
PROBLEM (1) (25 points)
A satellite of mass m circles a uniform spherical planet of unknown mass in a circular orbit of radius r with a period T. The
magnitude of the gravitational force exerted on the satellite by the planet is F. Express your answers in