Homework Answers
Add Answer to:
3. You crouch from a standing position, lowering your center of mass 18 cm in the...
Suppose you want to jump up first by crunching down and then pushing off the ground....
Suppose you want to jump up first by crunching down and then pushing off the ground. You initially lower your center of mass by 0.2m. The average force exerted by the floor on you is three times your weight. What is your upward speed as you pass through your standing position just as you are leaving the floor?
E. Suppose you are standing on the scale in the elevator and the elevator is accelerating...
E. Suppose you are standing on the scale in the elevator and the
elevator is accelerating downward with
an acceleration smaller than 9.8 m/s2
i. Draw free-body diagrams of yourself, the scale, and the floor
of the elevator where it interacts
with the scale.
ii. How must the magnitude of the force exerted by the scale on
you compare with your own
weight?
iii. How must the reading on the scale compare with the reading
you make when the elevator...
Problem #6: A 144lb weight stretches a spring 18 feet. The weight hangs vertically from the...
Problem #6: A 144lb weight stretches a spring 18 feet. The weight hangs vertically from the spring and a damping force numerically equal to 12 times the instantaneous velocity acts on the system. The weight is released from 9 feet above the equilibrium position with a downward velocity of 39 fts. (a) Determine the time (in seconds) at which the mass passes through the equilibrium position. (b) Find the time in seconds) at which the mass attains its extreme displacement...
You are designing an elevator for a hospital. The force exerted on a passenger by the...
You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.50 times the passenger's weight. The elevator accelerates upward with constant acceleration for a distance of 3.6 m and then starts to slow down. What is the maximum speed of the elevator? Express your answer in meters per second.
Please derive these equations and break them down into steps . thank you very muvj Pumping from a Standing Position...
Please derive these equations and break them down into steps .
thank you very muvj
Pumping from a Standing Position The pumped swing is modeled as a pendulum with variable length L. The rider is modeled as a point mass m, and L is the distance from the rider's center of mass to the fixed swing support point O. Conservation of angular momentum for a point mass undergoing plane motion is where H is the angular momentum of the body...
You have been hired to design a family-friendly see-saw. Your design will feature a uniform board (mass M= 8 kg, length L = 7 m) that can be moved so that the pivot is a distance d from the center of the board.
You have been hired to design a family-friendly see-saw. Your design will feature a uniform board (mass M= 8 kg, length L = 7 m) that can be moved so that the pivot is a distance d from the center of the board. This will allow riders to achieve static equilibrium even if they are of different mass, as most people are. You have decided that each rider will be positioned so that his/her center of mass will be a...
Two lady beetles are standing on a CD, one 3 cm, half way out from the...
Two lady beetles are standing on a CD, one 3 cm, half way out from the centre, the other 6 cm out, on the outside edge. The CD turns ¼ of a revolution in 2 seconds. (i) Calculate the tangential speed v of the outside lady beetle. (ii) Calculate the angular velocity ω of the outside lady beetle. (iii) How would the tangential speed and angular velocity of the half way out lady beetle compare with these values (b) A...
3. Suppose you have a rock with a mass of 305 g. When attached to a...
3. Suppose you have a rock with a mass of 305 g. When attached to a spring scale and lowered completely into water the spring scale reads Fe 2.10 N. Note that this reading is significantly lower than the rock's weight Fo Mg (3 N), because of the buoyant force helping to support it. From this information, calculate the following: (a) Fe: the magnitude of the buoyant force exerted on the rock. Use N2L in conjunction with the FBD shown...
Even when the head is held erect, as in the figure below, its center of mass...
Even when the head is held erect, as in the figure below, its center of mass is not directly over the principal point of support (the atlanto-occipital joint). The muscles in the back of the neck must therefore exert a force to keep it erect. That is why your head falls forward when you fall asleep in class. If the perpendicular distance between the line of action for the weight of the head and the pivot point is w. -...
Please help thank you will upvote ! The position a block with mass m=6kg is given...
Please help thank you will upvote !
The position a block with mass m=6kg is given by F =(1.2m/s) 4+15.9 m/s)t3-(3.3 m/s^)t* 2. what is magnitude of the force at t=5 sec? (disregard the gravitational force) A car moving at speed 32 m/s on a dry pavement, skids to a stop over 227 m. What is the coefficient of friction between the cars tires and the pavement assume g=10m/s^2, and write down your answer up to two decimal points) A...
E. Suppose you are standing on the scale in the elevator and the
elevator is accelerating downward with
an acceleration smaller than 9.8 m/s2
i. Draw free-body diagrams of yourself, the scale, and the floor
of the elevator where it interacts
with the scale.
ii. How must the magnitude of the force exerted by the scale on
you compare with your own
weight?
iii. How must the reading on the scale compare with the reading
you make when the elevator...
Problem #6: A 144lb weight stretches a spring 18 feet. The weight hangs vertically from the spring and a damping force numerically equal to 12 times the instantaneous velocity acts on the system. The weight is released from 9 feet above the equilibrium position with a downward velocity of 39 fts. (a) Determine the time (in seconds) at which the mass passes through the equilibrium position. (b) Find the time in seconds) at which the mass attains its extreme displacement...
Please derive these equations and break them down into steps .
thank you very muvj
Pumping from a Standing Position The pumped swing is modeled as a pendulum with variable length L. The rider is modeled as a point mass m, and L is the distance from the rider's center of mass to the fixed swing support point O. Conservation of angular momentum for a point mass undergoing plane motion is where H is the angular momentum of the body...
3. Suppose you have a rock with a mass of 305 g. When attached to a spring scale and lowered completely into water the spring scale reads Fe 2.10 N. Note that this reading is significantly lower than the rock's weight Fo Mg (3 N), because of the buoyant force helping to support it. From this information, calculate the following: (a) Fe: the magnitude of the buoyant force exerted on the rock. Use N2L in conjunction with the FBD shown...
Even when the head is held erect, as in the figure below, its center of mass is not directly over the principal point of support (the atlanto-occipital joint). The muscles in the back of the neck must therefore exert a force to keep it erect. That is why your head falls forward when you fall asleep in class. If the perpendicular distance between the line of action for the weight of the head and the pivot point is w. -...
Please help thank you will upvote !
The position a block with mass m=6kg is given by F =(1.2m/s) 4+15.9 m/s)t3-(3.3 m/s^)t* 2. what is magnitude of the force at t=5 sec? (disregard the gravitational force) A car moving at speed 32 m/s on a dry pavement, skids to a stop over 227 m. What is the coefficient of friction between the cars tires and the pavement assume g=10m/s^2, and write down your answer up to two decimal points) A...
Most questions answered within 3 hours.
-
The free energy change for the following reaction at 25 °C, when
[Sn2+] = 1.17 M...
asked 1 hour ago -
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 2 hours ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 3 hours ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 4 hours ago -
MATLAB HW 11 problem using Switch Case and Input commands
Write a script file that calculates...
asked 4 hours ago -
Considering gravitational time dilation, calculate the time that
passes in Earth’s surface while 1 hour passes...
asked 4 hours ago -
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 5 hours ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 5 hours ago -
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 6 hours ago -
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 8 hours ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 9 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 9 hours ago