A crate is given a push such that it has an initial speed of 5.2
m/s headed up a 15 degree incline. If the crate travels 3.5m up the
incline before reversing direction, what is the coefficient of
kinetic friction between the crate and the incline?
A block is projected up a frictionless inclined plane with
initial speed v0 = 3.48 m/s. The angle of
incline is θ = 32.7°.
(a) How far up the plane does the block go?
___m
(b) How long does it take to get there?
___ s
(c) What is its speed when it gets back to the bottom?
___ m/s
A box of mass 0.200 kg is given an initial speed of 2 m/s up a
ramp with an angle of θ = 45° from the horizontal. The coefficients
of friction between the box and ramp are μs = .7 and μk = .5 a) How
far up the ramp does the box go before it comes to rest? b) Does it
start to slide down the ramp after it gets to its maximum distance
up the ramp?
A crate of mass 10.3 kg is pulled up a rough incline with an
initial speed of 1.43 m/s. The pulling force is 93.0 N parallel to
the incline, which makes an angle of 19.4° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.97 m.
(a) How much work is done by the gravitational force on the
crate?
J
(b) Determine the increase in internal energy (related to thermal
energy, having the opposite...
A
crate of mass 9.2 kg is pulled up a rough incline with an initial
speed of 1.42 m/s. The pulling force is 96N parallel to the
incline, which makes an angle of 20.4 with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
5.02 m.
A) how much work is done by the gravitational force on the
crate?
B) determine the increase in internal energy of the
crate-incline system owing to friction?
C) how...
A crate of mass 11.0 kg is pulled up a rough incline with an
initial speed of 1.40 m/s. The pulling force is 102 N parallel to
the incline, which makes an angle of 19.0° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.94 m. (a) How much work is done by the gravitational force on the
crate? J (b) Determine the increase in internal energy of the
crate–incline system owing to friction....
A crate of mass 9.4 kg is pulled up a rough incline with an
initial speed of 1.52 m/s. The pulling force is 110 N parallel to
the incline, which makes an angle of 20.8° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.92 m.
(a) How much work is done by the gravitational force on the
crate? J
(b) Determine the increase in internal energy of the crate–incline
system owing to friction....
A ball is thrown straight up with an initial speed of 19 m/s.
The ball was released 6.3 m above the ground, but when it returns
back down, it falls into a hole d m deep. If the ball’s speed is
35.7 m/s at the bottom of the hole, how deep is the hole (in
m)?
In (Figure 1), the rod moves with a speed of 1.6 m/s on rails
29.0 cm apart. The rod has a resistance of 2.1 Ω . The magnetic
field is 0.31 T , and the resistance of the U-shaped conductor is
26.0 Ω at a given instant.
Part A Calculate the induced emf
Part B Calculate the current in the U -shaped conductor.
Part C Calculate the external force needed to keep the rod's
velocity constant at that instant.
A block at the bottom of an inclined plane is given an
initial speed of 4 m/s up the plane. If there is no friction
between the plane and the block, how long does it take for the
block to return to the bottom?