Chapter 10 Practice problems1) A pulley system lifts a 1345 N weight a distance of 0.975 m. Amanda pulls the rope adistance of 3.9 meters exerting a force of 375 N.A) What is the Ideal Mechanical Advantage of the system?B) What is the Mechanical Advantage?C) What is the efficiency of the system?2) A mover's dolly is used to deliver a refrigerator up a ramp into a house. The refrigeratorhas a mass of 115 kg. The ramp is 2.10 m long and rises 0.850 m. The mover pulls thedolly with a force of 496 N up the ramp. The dolly and ramp constitute a machine.A) What work does the mover do?B) What is the work done on the refrigerator by the machine?C) What is the efficiency of the machine?3) Because there is very little friction, the lever is an extremely efficient simple machine.Using a 90% efficient lever, what input work is required to lift an 18 kg mass through adistance of 0.50 m?4) A motor having an efficiency of 88% operates a crane having an efficiency of 42%. Withwhat constant speed does the crane lift a 410 kg crate of machine parts if the powersupplied to the motor is 5.5 kW?5) What work is required to lift a 215 kg mass a distance of 5.65m using a machine that is72.5% efficient?

Given: output force Fo=1345 Noutput distance do=0.975 minput force Fi=375 Ninput distance di=3.9 m

1) A pulley system lifts a 1345 N weight a distance of 0.975 m. Amanda pulls the rope a distance of 3.9 meters exerting a force of 375 N. A) What is the Ideal Mechanical Advantage of the system? B) What is the Mechanical Advantage? C) What is the efficiency of the system?

1) A pulley system lifts a 1345 N weight a distance of 0.975 m. Amanda pulls the rope a distance of 3.9 meters exerting a force of 375 N. A) What is the Ideal Mechanical Advantage of the system? B) What is the Mechanical Advantage? C) What is the efficiency of the system?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: You’re using a system of multiple simple machines to move a 1500 N load up a height of 2 meters. You…

A: Mechanical advantage The mechanical advantage of a ramp or an inclined plane is the defined by the…

Q: A person pulls a box with a uniform velocity over a surface. The kinetic frictional force between…

A: Explanation Power is defined as the work done per unit second. If W is the work done in time t then…

Q: 16. A diesel-powered crane (mc = 2.93 x 10° kg) is lifting a heavy block of concrete mb = 8.44 x 104…

Q: ▼ Part A How much work must you do to push a 10.0 kg block of steel across a steel table (μ = 0.60)…

A: Mass of block m = 10 kg speed of block V = 1.0m/s time taken t = 3.40s uk = 0.60

Q: The basis of muscle action is the power stroke of the myosin protein pulling on an actin filament.…

A: Input energy, Ein=5.1×10-20J Displacement, d=10nm=10×10-9m Force, F=1.0pN=1.0×10-12N

Q: An elevator weighing 3000N ascends at a constant speed of 8.omis. How much power must the motor…

A: Given : Force (F) = 3000 N Speed (v) = 8.0 m/s

Q: The basis of muscle action is the power stroke of the myosin protein pulling on an actin filament.…

A: Given: displacement, S = 10 nm = 10 × 10-9 m = 10-8 m force, F = 1.0 pN = 10-12 N Energy input, E…

Q: A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The…

A: To solve the problem we will use work-energy theorem. Given Data Mass of the cabinet is m=65.0 kg…

Q: A drone flies horizontally at a speed of 25m/s at a height of 65m. Suddenly, these propellers stop…

A: Step 1:

Q: 4. A 1,380kg sports car accelerates from zero to 35 m/s in 8.0 s. Assume in accelerates at a…

A: Average power is given by Instantaneous power is given by P = F × V Where F = Force applied on…

Q: A 5.0kg cart is moving at a speed of 6.0m/s and accelerates to a final speed of 10.0m/s. How much…

A: According to the Work-energy theorem, the work done by a force is equal to the change in the kinetic…

Q: se 3: Class - Da Paco rode his skateboard up a ramp for a distance of 3.8 meters. If the ideal…

A: The first question is asking for the height above the ground that Paco reached when he rode his…

Q: 10. Which of the following is ALWAYS TRUE about conservative and nonconservative forces? A. The…

A: Conservative force :- If the work done by a force depends only on the initial and final position or…

Q: You have 2 pulley blocks and a rope. Each pulley block has 2 pulleys in them. You can pull on the…

A: Given: The number of the pulley is 2. The maximum effort is 67.9 N. The efficiency is 76.8%.

Q: Group Problem: You are planning to build a log cabin in Northern Minnesota on a remote hill with a…

A: Given,Weight of the log = 1000 lbsAngle with espect to horizontal = θ =20°The coefficient of kinetic…

Q: A steam engines raises a 1800 kg mass vertically at the rate of 9 m/s. What is the power of the…

A: mass raised (m) = 1800 kg velocity (v) = 9 m/s efficiency = 70 %

Q: A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 5.60 cm. (a) Use work and…

A: Given, Mass of bullet m = 7.80 g = 7.80 x 10-3 Kg Initial velocity u = 500 m/s Distance d = 5.60 cm…

Q: If a 1300 kg car can accelerate from 35 km/h to 60 km/h in 3.6 s, how long will it take to…

A: The objective of the question is to find out the time it would take for a car to accelerate from 60…

Q: R T T2 M1 = 10 kg M2 = 6 kg 8 m How much work is done by mass 1? b. How much work is done by mass 2?…

Q: If a 1300 kg car can accelerate from 35 km/h to 60 km/h in 3.6 s, how long will it take to…

A: The objective of the question is to find out the time it will take for a car to accelerate from 60…

Q: There are two blocks connected by a rope which is wound over an ideal pulley. This is depicted in…

Q: allison exerts a force of 186 N on a lever to raise a 2.70 x 10^3 N object to a height of 29.0 cm.…

A: Given Effort = E = 186 N Load = L = 2.70 × 103 N = 2700 N Rise of object height = ho = 29.0 cm…

Q: A 20 meter long ramp is used to move a box weighing 1200N into a truck that is 5 meters off the…

A: (given) Weight of box = 1200 N Height = 5 m Applied force = 390 N Length of ramp = 20 m Efficiency…

Q: 3. A force of 10 N is applied to a small cart for a distance of 2.0 m. (a) What work is done on the…

Q: 1. Find the work done in the figure below. The magnitude of F= 50 N. The displacement is d= -3.0 m/…

Q: 5. Two blocks with unequal masses, M and m (M = 2m), are connected by a light, very long cord…

A: the force of the equation is for mass M, Mg-T = Ma - (1) for mass m, T-mg=ma…

Question

100%

Chapter 10 Practice problems
1) A pulley system lifts a 1345 N weight a distance of 0.975 m. Amanda pulls the rope a
distance of 3.9 meters exerting a force of 375 N.
A) What is the Ideal Mechanical Advantage of the system?
B) What is the Mechanical Advantage?
C) What is the efficiency of the system?
2) A mover's dolly is used to deliver a refrigerator up a ramp into a house. The refrigerator
has a mass of 115 kg. The ramp is 2.10 m long and rises 0.850 m. The mover pulls the
dolly with a force of 496 N up the ramp. The dolly and ramp constitute a machine.
A) What work does the mover do?
B) What is the work done on the refrigerator by the machine?
C) What is the efficiency of the machine?
3) Because there is very little friction, the lever is an extremely efficient simple machine.
Using a 90% efficient lever, what input work is required to lift an 18 kg mass through a
distance of 0.50 m?
4) A motor having an efficiency of 88% operates a crane having an efficiency of 42%. With
what constant speed does the crane lift a 410 kg crate of machine parts if the power
supplied to the motor is 5.5 kW?
5) What work is required to lift a 215 kg mass a distance of 5.65m using a machine that is
72.5% efficient?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

What average mechanical power (in W) must a 70.5 kg mountain climber generate to climb to the summit of a hill of height 305 m in 47.0 min? Note: Due to inefficiencies in converting ch energy to mechanical energy, the amount calculated here is only a fraction of the power that must be produced by the climber's body. HINT W Need Help? Read It Watch It
An elevator engine lifts a total load of 3,659 N weight with constant speed of 2.8 m/s. What is the power consumption of the elevator? Express your answer in watts. plz help and use g = 9.8
Power of the Human Heart. The human heart is a powerful and extremely reliable pump. Each day it takes in and discharges about 7500 L of blood. Assume that the work done by the heart is equal to the work required to lift this amount of blood a height equal to 1.5 m. The density (mass per unit volume) of blood is 1050 kg/m3 . What is the heart's power output. Use g = 9.8m/s2 Calculate answer to one decimal.
A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The friction force on the box is 75.0 N. The cabinet starts from rest. What is the final kinetic energy of the cabinet at the end of the ramp, in Joules? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
Please help me to solve this problem step by step
9) A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time, answer the following. (a) How many people would it take to run a 3.00 kW electric clothes dryer? _____ people (b) How many people would it take to replace a large electric power plant that generates 800 MW? _____people
If a ski lift raises 150 passengers averaging 690 N in weight to a height of 126 m in 45.9 s, at constant speed, what average power is required of the force making the lift? Number i 270096 eTextbook and Media Units W
C. Work Problems: 4. F = 90 N d=5m W=? 7. W = ? F = 62.6 N d=13 m 5. F = 6 N W = 72 J d=? W 20 8. W = 13.2 J F=2N d=? 2019 1009.0 6. W = 120 J d = 24 m F=? 9. W = 136 J d=27.2 m F=? LOOT W WAI 10. If 360 Joules of work are needed to move a crate a distance of 4 meters, what is the weight of the crate? monocroq silt eftil notevals odT 10tavolo ne no ets и 000 gnidgisw noensq A.01 bozu zaw 15wo rloum 11. If a group of workers can apply a force of 1000 Newtons to move a crate 20 meters, what amount of work will they have accomplished? to zoluol OST soubong of boboon ai omit doum woH.II 12. If 68 Joules of work were necessary to move a 4 Newton crate, how far was the crate moved? GOL 13. How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes.
A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the output power, in kW (kiloWatts)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
2. A 5.2-kg box slides a distance of 16.0-m. If the coefficient of kinetic friction is 0.30, what is the work done by the frictio" 6 d x244.64 J ✓cci 6 ccilo 16 cci16 ceiz
The "efficiency" of a machine is found by determining how much of the energy you started with will be able to be used productively. True False Type here to search DELL home F11 67 F1 F10 F12 A BE Esc F2 # 3 F3 ex 54 I C F4 $ F5 % 5 90% F6 A 6 & 8 F8 00 * 8 F9 prt sc 9
1. A 23.0 kg child is playing on a swing with a length of 2.5 m. If the swing starts from rest and makes an angle of 40.0◦ with the vertical at the top of the swing, a) determine the child’s speed at the bottom of the swing neglecting friction. b) If the swing has a speed of 2.8 m/s at the bottom, determine the work done by friction during the downswing and, bonus) assuming the force of friction is constant, determine the maximum angle the swing attains on the upswing after passing through the bottom. Hint: Use the approximation that cos θ ≈ 1 − 1 2 θ 2 for angles given in radians.