Question

justin, with a mass of 55kg, is going down an 8.0-m-high water slide tilted at a constant but unknown angle. the coefficient of kinetic friction between him and the slide is 0.2. he starts at rest, and his speedat the bottom is 11m/s. the work done by the kinetic friction force during his descent is -984.5 J.

a) What is the work done by the normalforce during his descent?

b) What is the angle of the incline?

c) What is the work done by the gravitational force during his descent?

Answer #1

A student of mass 65.4 kg, starting at rest, slides down a slide
18.2 m long, tilted at an angle of 32.1° with respect to the
horizontal. If the coefficient of kinetic friction between the
student and the slide is 0.133, find the force of kinetic friction,
the acceleration, and the speed she is traveling when she reaches
the bottom of the slide. (Enter the magnitudes.)
HINT
(a)
the force of kinetic friction (in N)
N
(b)
the acceleration (in...

A child whose weight is 190N slides down a playground slide that
makes an angle of 29 degrees with a horizontal and has a length of
9.4m. The coefficient of kinetic friction between the slide and the
child is 0.35.
a) What is the height of the slide?
b) What is the change in gravitational potential energy of the
child?
c) Draw the free-body diagram of the child
d) Calculate the frictional force on the child
e) How much energy...

A box is sliding down an incline tilted at a 11.8° angle above
horizontal. The box is initially sliding down the incline at a
speed of 1.60 m/s. The coefficient of kinetic friction between the
box and the incline is 0.390. How far does the box slide down the
incline before coming to rest?
A) .736 m
B) 1.03 m
C) .883 m
D) .589 m
E) the box does not stop. it accelerates down the plane.

A child leaves her book bag on a slide. The bag, which is at the
top of the slide, starts from rest and reaches the bottom in 1.75
s. The mass of the book bag is 3.20 kg, the length of the slide is
3.30 m and the angle of incline is 28.0°. (Assume the +x-axis to be
parallel to and down the slide. For all values, enter the magnitude
only.)
(a) With what acceleration does the bag go down...

A block of mass m is initially held at rest at point P on an
incline that makes an angle q with respect to horizontal. The
coefficient of kinetic friction between the block and the incline
is mk. After the block slides down the incline from point P, it
starts to slide without friction up a vertical circular track of
radius R. When it reaches the top of the circle, the normal force
(downward) by the track to the block...

A child whose weight is 325 N slides down a 9.2 m playground
slide that makes an angle of 30° with the horizontal. The
coefficient of kinetic friction between slide and child is 0.20. If
she starts at the top with a speed of 0.55 m/s, what is her speed
at the bottom?

Starting from rest, a 4.30-kg block slides 1.80 m down a rough
30.0° incline. The coefficient of kinetic friction between the
block and the incline is ?k = 0.436.
(a) Determine the work done by the force of gravity. J
(b) Determine the work done by the friction force between block
and incline. J
(c) Determine the work done by the normal force. J
(d) Qualitatively, how would the answers change if a shorter
ramp at a steeper angle were...

A 3.0 kg block slides down an incline that makes an angle ? =
30?The coefficient of kinetic friction between the block and the
incline is ?k = 0.3 If the incline is 3 m long:
1. Determine the work done by friction
2. Determine the work done by the normal force
3. Determine the work done by gravity
4. What is the total work done on the block?
5. If the block is given an initial speed of 5...

A box is pushed up an incline at a constant speed by a
horizontal force of 30 N. The angle of the incline is 15.4 degrees.
The box has a mass of 3.1 kg and moves a total distance of 2.96 m.
The coefficient of kinetic friction between the box and the ramp is
0.59.
What is the work done by the gravitational force during this
motion? J
What is the work done by the friction force during this motion?...

A child whose weight is 242 N slides down a 7.40 m playground
slide that makes an angle of 41.0° with the horizontal. The
coefficient of kinetic friction between slide and child is 0.0950.
(a) How much energy is transferred to thermal energy? (b) If she
starts at the top with a speed of 0.440 m/s, what is her speed at
the bottom?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 17 minutes ago

asked 31 minutes ago

asked 35 minutes ago

asked 35 minutes ago

asked 52 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago