HomeworkLib
Homework Solutions
Homework Questions & Answers
Atricles
Topics
Post
Ask Question
Post a Article
Sign In
Sign Up
Home
/
Topics
/
Work-And-Energy
Work-And-Energy Questions
If a spring has a constant of #4 (kg)/s^2#, how much work will it take to extend the spring by #87 cm #?
A wrench with a length of #42 cm# is being used to unscrew a #7/2 cm# bolt. If a torque of #18 Nm# is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?
The force applied against a moving object travelling on a linear path is given by #F(x)=x+2e^x #. How much work would it take to move the object over #x in [2, 3] #?
How much work would it take to push a # 4 kg # weight up a # 5 m # plane that is at an incline of # pi / 4 #?
An object with a mass of #6 kg# is hanging from an axle with a radius of #24 m#. If the wheel attached to the axle has a radius of #8 m#, how much force must be applied to the wheel to keep the object from falling?
An object with a mass of #8 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #8 m/s^2?
A ball with a mass of #150 g# is projected vertically by a spring loaded contraption. The spring in the contraption has a spring constant of #90 (kg)/s^2# and was compressed by #4/3 m# when the ball was released. How high will the ball go?
An object with a mass of #3 kg# is hanging from an axle with a radius of #3 cm#. If the wheel attached to the axle has a radius of #44 cm#, how much work would it take to turn the wheel a length equal to the circumference of the axle?
If a rocket with a mass of #700 kg# vertically accelerates at a rate of # 3/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
A spring with a constant of #2 (kg)/s^2# is lying on the ground with one end attached to a wall. An object with a mass of #8 kg# and speed of #1 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?
If an object with a mass of # 3kg # changes speed from #5m/s# to # 1m/s#, by how much does its kinetic energy change?
What is the kinetic energy of an object with a mass of #15 kg# that has been in freefall for #3 s#?
+More
Work-And-Energy Articles
+More
Recent Questions
Recent Answers
I need help with these Mcq's please. Thank you 22. In general, the price buyers pay...
asked at 2020-01-17 05:12:33
What's V2 in general/how do you calculate it step by step?
asked at 2020-01-17 05:11:29
Problem 5-5 Calculating the Number of Periods [LO4] Solve for the unknown number of years in...
asked at 2020-01-17 05:11:26
How do you find the roots, real and imaginary, of #y= x- (x-2)(x-1) # using the quadratic formula?
asked at 2020-01-17 05:10:34
Principles of conductive engineering Question 2 (8 points) a) Show how we benefit from accident data...
asked at 2020-01-17 05:10:13
Why is there no mining in Antarctica, despite evidence of mineral resources on the continent?
asked at 2020-01-17 05:10:03
During the past half hour, a restaurant has had 23 orders for Pepsi and 15 orders for Mountain Dew. How many more orders have there been for Pepsi than for Mountain Dew?
asked at 2020-01-17 05:09:35
What is the slope of the line perpendicular to x = 3?
asked at 2020-01-17 05:09:12
4.) For the combustion of sucrose: C12H22011+ O2 CO2 H20 There are 10.0 g of sucrose...
asked at 2020-01-17 05:09:09
Which kingdom of organisms is most closely related to fungi?
asked at 2020-01-17 05:08:46
Ans22) the correct option is b) increases a binding price...
answered at 2020-01-17 05:12:34
Well volumes are generally add...
answered at 2020-01-17 05:11:29
t = ln(FV / PV) / ln(1 + r) t = ln($1,252 / $490) / ln 1.1...
answered at 2020-01-17 05:11:26
#x=2+sqrt(2)# #x=2-sqrt(2)#...
answered at 2020-01-17 05:10:34
Principles of conductive engineering Question 2 (8 points) a) Show how we benefit from accident data...
answered at 2020-01-17 05:10:16
Understandably, e...
answered at 2020-01-17 05:10:03
There have been 7 more orders...
answered at 2020-01-17 05:09:36
#=8#...
answered at 2020-01-17 05:09:36
#y=3#...
answered at 2020-01-17 05:09:12
5th question solve as 4 th Given Co 420d 1200g + 11 12 Bal...
answered at 2020-01-17 05:09:10