Question
In: Physics
1) A heavy wooden block, of mass m, is dragged by a force Falong a smooth...
1) A heavy wooden block, of mass m, is dragged by a force Falong a smooth steel plate, as shown in Figure 1, for two cases. The magnitude of the applied force F is the same for both cases. (a) Complete the Free-Body-Diagrams in (i) and (ii). (b) Find the normal force in (i) and (ii). (c)Which normal force is greater in (i) or (ii). Take the angle of incline as theta
2) A person pushes a 14.0 kg lawn mower at a constant speed with a force of F=88.0 N directed along the handle, which is at an angle of 45.0ºto the horizontal, Figure 4. (a) Draw the Free-Body-Diagram showing all force acting on the mower. Calculate (b) the horizontal friction force on the mower, then (c) the normal force exerted vertically upward on the mower by the ground. (d) What force must the person exert on the lawn mower to accelerate it from rest to 1.5 m/s in 2.5 s, assuming the same friction force
Solutions
genius_generous answered 2 years agoRelated Solutions
A bullet of mass m = 29 g is fired into a wooden block of mass...
A bullet of mass m = 29 g is fired into a wooden block of mass M
= 4.9 kg as shown in the figure below. The block is attached to a
string of length 1.5 m. The bullet is embedded in the block,
causing the block to then swing as shown in the figure. If the
block reaches a maximum height of h = 0.27 m, what was the initial
speed of the bullet?
Suppos you have a block resting on a horizontal smooth surface. The block (with mass m)...
Suppos you have a block resting on a horizontal smooth surface.
The block (with mass m) is attached to a horizontal spring (spring
constant k), which is fixed at one end. The spring can be
compressed and stretched. The mass is pulled to one side and
released. The maximum displacement is 15cm.
a) If k=150N/m, calculate the mass of the block.
b) Draw the graphs for velocity and acceleration of the motion.
On the graphs, label the maximum values of...
The figure shows an initially stationary block of mass m on a floor. A force of...
The figure shows an initially stationary block of mass
m on a floor. A force of magnitude 0.500mg is
then applied at upward angle θ = 20°. What is the
magnitude of the acceleration of the block across the floor if
(a) μs = 0.630 and
μk = 0.530 and (b)
μs = 0.430 and μk =
0.320?
(a)
Number
Enter your answer in accordance to item (a) of the question
statement
Units
Choose the answer from the menu in...
The figure shows an initially stationary block of mass m on a floor. A force of...
The figure shows an initially stationary block of mass
m on a floor. A force of magnitude 0.500mg is
then applied at upward angle ? = 20
The figure shows an initially stationary block of mass m on a floor. A force of...
The figure shows an initially stationary block of mass
m on a floor. A force of magnitude 0.500mg is
then applied at upward angle ? = 20
A 13.0 kg block is dragged over a rough, horizontal surface by a 88.0 N force...
A 13.0 kg block is dragged over a rough, horizontal surface by a
88.0 N force acting at 20.0° above the horizontal. The block is
displaced 4.50 m, and the coefficient of kinetic friction is
0.300.
(a) Find the work done on the block by the 88.0 N force.
(d) What is increase in internal energy of the block-surface
system due to friction?
(e) Find the total change in the block's kinetic energy.
9.) A 19.6 kg block is dragged over a rough, horizontal surface by a constant force...
9.) A 19.6 kg block is dragged over a rough, horizontal surface
by a constant force of 183 N acting at an angle of angle 30.5 ◦
above the horizontal. The block is displaced 97.1 m and the
coefficient of kinetic friction is 0.121.
a. Find the work done by the normal force. Answer in units of
J.
b. What is the net work done on the block? Answer in units of
J.
A 15 kg block is dragged over a rough, hor- izontal surface by a constant force...
A 15 kg block is dragged over a rough, hor- izontal surface by
a constant force of 107 N acting at an angle of angle 31.9◦ above
the horizontal. The block is displaced 59 m and the coefficient of
kinetic friction is 0.189.
Find the work done by the 107 N force. The
2
003 (part 2 of 5) 10.0 points
Find the magnitude of the work done by the force of
friction.
Answer in units of J.
004 (part...
A bullet of mass m1 is fired horizontally into a wooden block of mass m2 resting...
A bullet of mass m1 is fired horizontally into a wooden block of
mass m2 resting on a horizontal surface. The coefficient of kinetic
friction between block and surface is μk. The bullet remains
embedded in the block, which is observed to slide a distance s
along the surface before stopping.
What was the initial speed of the bullet?
Take the free-fall acceleration to be g.
A bullet of mass 5.00 g is fired horizontally into a wooden block of mass 1.16...
A bullet of mass 5.00 g is fired horizontally into a wooden
block of mass 1.16 kg resting on a horizontal surface. The
coefficient of kinetic friction between block and surface is 0.240.
The bullet remains embedded in the block, which is observed to
slide a distance 0.200 m along the surface before stopping.
Part A What was the initial speed of the bullet?
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