16. (10 pts) The graph shows the net force acting on a 4.0-kg block as it...
A 1.0 kg block is in motion up a ramp inclined at 40° to the horizontal with an initial speed of 4.0 m / s. The block comes to rest after traveling d=0.84 mastraight along the ramp. (a) Determine the force of friction acting on the block. (b) What was the coefficient of kinetic friction between the block and ramp? (c) How much work was done by the normal force?
Q1-(25 pts) A block of mass m is on a horizontal surface and is attached to a spring whose other end is fixed. The spring constant is k. The coefficient of kinetic friction between the block and the horizontal surface is u. A force Facts on the block always making an angle with the horizontal, as shown in the figure. The magnitude of the force is adjusted so that the block moves with constant speed v on the surface from...
A 250 g block is moving along the “x” axis and at some point a
force in the positive direction of the axis acts on it.
The graph shows the magnitude of the force versus the position
“x” of the particle. The curve is given by F=a/x^2, with a=9.0 N.m2
. Find the work done on the block by the force as the block moves
from x=1.0 m to x=3.0 m by:
a.) Estimating the work from the graph.
b.)...
A 3.90 kg block is acted upon by a horizontal force F(x) = 24.0
- 10.0x where the force is measured in Newtons if x is measured in
meters. The coefficient of kinetic friction between the block and
the flat surface is 0.190. The block is initially at x = 0 m.
a) What distance must the block travel if the net work done on
the block by F(x) and friction combined is to be exactly
zero?_________________
b) At what...
A block with a mass of 4 kg is sliding across a horizontal surface with an initial speed of 5 m/s. Because of kinetic friction, the energy of this system will decrease linearly with the distance travelled by the block. a. What is the magnitude of the force of kinetic friction (in N) acting on the block if the block moves 4 m before coming to a stop? b. What is the average power (in W) supplied by the force...
A 10 kg block is dragged by an applied force of 20N, which makes an angle of 600 with the horizontal. The coefficient of friction of the surface is. The block starts from rest and is pulled a distance of 7m. Calculate the work done by the applied force? Calculate the work done by the force of friction? What is the resultant work done? What is the final velocity of the block? Recall: work done equals change in kinetic...
A woman pulls a block along a horizontal surface at a constant speed with a force of 10 N acting 20 degrees above the horizontal. The block moves and she does 85 J of work. What is the distance, in m, that the block moves?
Question 16 1 pts A 50-kg block is at rest on a 150 slope. A force of 250 N is acting on the block up the slope parallel to it. If the block does not slide up the slope, what is the minimum value of the coefficient of static friction between the block and the slope? 0.528 0.566 O 0.510 O 0.260 Question 17 1 pts A force of 50-N directed 30° above the horizontal is applied to a 10-kg...
WE-3 Atx-2m a 3kg block has a Velocity of +4m/s. The net FN)20 force on the block (magnitude and direction) is shown as a function of position on the figure to the right. a) Find the net work done on 15 -5 -10 -15 -20 the block as it moves from x-2m to x-8m b) Find the kinetic energy of -25 the block at x-8m
3. A 0.5 kg object moves along a straight line. The net force acting on the object varies with its displacement as shown by the graph on the next page. The object starts from rest at x = 0 and travels a total distance of 20 m. 5 4 Force 2 6 8 10 1214 16 18 2022 Displacement (m) each of the following: (a) the acceleration of the object at x-6 m (b) the time needed for the object...