A TMotorLogMass - 800 kgT (kN)T-0.5t4.5t (s)353Fig. 4Fig. 4 shows the log has a mass of 800 kg and rests on the ground for which the coefficientsof statics and kinetic friction are µ, = 0.1 and Hx = 0.01, respectively. The motor deliversa horizontal towing force T to its cable at A which varies as a linear function for t 2 3s andT = 0.5t? for t < 3s as shown in the graph. Originally the tension in the cable is zero.a. Determine the time at which the log starts to move.

Answered: Image /qna-images/answer/83717a4b-dc60-423a-a444-3e2db3babde7.jpg

Answered: A T Motor Log Mass = 800 kg T (kN) -…

Engineering

Mechanical Engineering

A T Motor Log Mass = 800 kg T (kN) - 0.5r 4.5 t (s) 3 53

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.24P: A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The...

See similar textbooks

Related questions

Q: 30KN 30KN 30KN D 30KN 30KN 30kN 30kN G B N. H 30 A h 30° M K -4 mt4 m4mt4m4m-

A: GIVEN- force diagram Determine the forces DE, NE and LP. Related subject- engineering mechanics…

Q: 1 Eaxial Ehoop 91 92

Q: 10-8 2 2 2n 2 PsdS |r-r'l ppdpd 4+p² 30 раpdф V = 49.7 V 10-9 36n 4+p

Q: Find the tension in AC and CB A B 745° 35° 300 N

A: Calculated tension in AC and CB.

Q: A DC shunt generator delivers 187 A at 260 V. The armature resistance and shunt field resistance are…

A: Given that current I = 187 A V = 260 Volts Armature resistance = 0.028 ohm Shunt field resistance =…

Q: For the following situation, what minimum size of PV array (kW) is required? Average AC Load3 13.5…

A: Option - D ==> 2.7 kW

Q: Find the horsepower rating of a motor running at 1,500 rpm and developing a torque of 105 lb-ft.…

A: Power is defined as the rate of doing work by the device. If T be the torque developing by the…

Q: A motor running 1800rpm transmits 10KW of power through a 25mm diameter shaft 1.2m long. What is the…

Q: The nameplate data of a separately excited DC motor is PN=5.5kW, UN=110V, In=80A, n=1000r/min. Try…

A: Mechanical characteristic is another name for speed-torque characteristic. For smaller loads, speed…

Q: State the common dimensional units for the input and output of generator of electricity.

A: Concept: 1) Generator is a machine which converts mechanical energy into electric energy. 2) Input…

Q: Considerations : End Effector weight: 1KG L3 Object weight : 4.2 KG M3 = M2 = 3.8KG [Motor M 3…

A: Robot Note :- you have posted multiple questions on single window. As per the…

Q: Problem Solving. Solve the following problems completely. 5. Motors from two different manufacturers…

Q: 5kN 2kN-m 1kN/m 1.2- 1.2 t1.2 -2Am B

A: It is required to determine reaction force at support A and B

Q: A robot is exploring Charon, the dwarf planet Pluto's largest moon. Gravity on Charon is 0.278…

A: Calculate the volume of spherical rock. V=43πR3=43πD23=43π6 cm2×1 m100 cm3=1.131×10-4 m3…

Q: A hydraulic transmission operating at 110-bars pressure has the following characteristics Pump VD =…

Q: F, FM = 12 cm, b = 22 cm, c = 50 cm, Wi = 150 N, Wo = 100 N, 8 = 15° ve ß = 45° FM=? FJ=? W. Wo

A: Given, a= 12cm , b= 22cm and c= 50 cm W1= 150 N and W0 = 100N

Q: Brachioradialis insertion = 12° Brachioradialis insertion distance from COR = 0.29m 6SON NO8 0.035m…

A: Solution: The resolution of force 80 N in y direction : F1y=F1sin12°=80sin12°=16.632 N The vertical…

Q: A 3-phase, 50 Hz, 3000 V motor develops 600 H.P. (447·6 kW), the power factor being 0·75 lagging and…

Q: A 1kg weight is hanged with a height of 1 meter on a pulley with a radius of 2cm produce 5 watts of…

Q: 0(1) 18 N-m-s/rad 1 N-m-s/rad T() 02(1) 3 kg-m2 00 9 N-m/rad 3 N-m/rad

A: For shaft -1 the equation of motion is: 56 + 1(6, – 02) + 9(6 – 02) = 0 For shaft -2 the equation of…

Q: ne space constant for a resistance of 10

A: Need to find space constant foran axon.

Q: 3kN m 12 kN/m PA -1.6 m -1.6 m- -1.6 m

A: Drawing the shear force and bending moment diagram.

Q: B E 200 N 1 m A D -1 m 1 m 2 m 800 N m

Q: h- 25 W/m2.C T-5'C 5 T- 100°C 7. 8. 6. L00 Insulated

Q: net effect on the machine part is the same. What is the magnitude of the moment M.? 20 cm Mc B В 10N…

Q: State law of parallelogram of forces.

A: Parallelogram of forces: The parallelogram of the forces is used to obtain the two forces' resultant…

Q: 23. For a site, if the load to be covered is 17,520,200 MWh, and a wind turbine with 3 MW capacity,…

A: Given : P - 3 MW E - 6000 MWh C - 1500 Euro/kW To find : Cost of energy

Q: B A =Ac =0.1 m? C D T1 T= 66°C

A: Given data, Thermal conductivity of A, B, C and D is,kA=150 W/m·°C,kB=30 W/m·°C,kC=50 W/m·°C,kD=70…

Q: POWER The moment that a motor can output is given as a function of its shaft speed by the = 60 –…

A: Given: The moment equation is, M=60-0.24ω.

Q: Q5.A 50 HZ, 4-poles star connected induction motor has a slip=0.04 & Pout=20hp find: (1).Synchronous…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: 23. For a site, if the load to be covered is 17,520,200 MWh, and a wind turbine with 3 MW capacity,…

A: Given: The load to be covered, P = 17520,200 MWh The capacity of wind turbine, P' = 3 MW The actual…

Q: 100 KH 20 KN/m B 2m C am RI

Q: 15ON 50N 100N /m EI 8 midspan F2 6 12 El 8 over hang =

Q: which of the following equation is correct equation for change in internal energy du. O a. dU = T ds…

A: The internal energy based on First law of thermodynamics is, dU=dq+dW For reversible closed system…

Q: In the following figure, If Q=0.00594 m/s, what is the output power delivered by the 100% efficient…

A: Consider motor as control volume. Assume fluid flowing is water. It's density is, ρ=1000 kg/m3 So,…

Q: 1. The unit of joule can be converted to which of the following? (A) Pa-m2 (B) N . kg (C) Pa/m? (D)…

A: The unit of Joule can be converted into Pa.m3. Therefore, option (D) is the correct option.

Q: In figure (5), if the 50 kg loadA is hoisted by motor M so that the load has a constant velocity of…

Q: A 1kg weight is hanged with a height of 1 meter on a pulley with a radius of 2cm produce 5 watts of…

Q: P Po +-+z= 2g Y V² P

Q: Q1. Long-shunt generator delivers a load current of 30 A at 220 V. It has armature and shunt field…

A: Question (1) is Solved here. For Other Question, Please Post this Question again.

Q: A hydraulic motor produces 240 N-m of torque when operating at 18 MPa. If the motor's mechanical…

Q: - 0.6 m 0.6 m acp =4 rad/s² 0.3 m @CD =2 rad/s

Q: #1--- #2 #3 A V #1 #2 #3 <<<<<< #E #6 T(°C) 300 200 TE 100 ~~~ B α 0 L+a 20 C Pb-Sn System 40 D #4…

A: Given: The Sn Pb diagram consists of different phases. The number 1 indication shows the complete…

Q: Find tension in AC and W ? 60 10 lbs A w

Q: Q. Define : Mechanical efficiency.

A: Definition of Mechanical efficiency: The ratio of power available at the impeller i.e. power…

Q: m -1, n (Tm.n-1 + Tm-1,m) + 2 T m, n Ay

Q: A washing machine has a power rating of 1360 W. How much energy does this appliance consume in one…

A: Since nothing is given about how long the machine is used, assume that it is used continuously for 1…

Q: Choose the correct "W" value for the given diagram below - m- B 25 N 0.6 m→ +- 14 m O a. 35 O b.5 O…

A: Solution:

Concept explainers

Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.

Question

A T
Motor
Log
Mass - 800 kg
T (kN)
T-0.5t
4.5
t (s)
3
53
Fig. 4
Fig. 4 shows the log has a mass of 800 kg and rests on the ground for which the coefficients
of statics and kinetic friction are µ, = 0.1 and Hx = 0.01, respectively. The motor delivers
a horizontal towing force T to its cable at A which varies as a linear function for t 2 3s and
T = 0.5t? for t < 3s as shown in the graph. Originally the tension in the cable is zero.
a. Determine the time at which the log starts to move.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

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, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.
A 1.1-kg disk A is placed on the inclined surface. The coefficient of static friction between the disk and the surface is 0.35. Is the disk in equilibrium if P=5.5N and =30?
The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.
Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.
A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The coefficients of static and kinetic friction for the two points of contact are as shown. Determine whether the plank moves from the position shown if (a) the plank is placed in position before the drum is set in motion; and (b) the plank is first placed on the support at A and then lowered onto the drum, which is already rotating.
The 10 N cylinder moves in a friction tube. Spring constants are k1 = 150 N / m and k2 = 200 N / m. When the system is at rest, d = 0.5 m. The system rotates around a fixed z-axis. In the case where d = 0.12 m, what is the coefficient of friction for the cylinder to have a constant velocity of 9.825 m / s?
A 1855 kg car has a velocity of 100 km/h when the brakes are fully applied. Assume modern traction control eliminates tire skidding. Determine time and distance to stop the car if dry-pavement static friction coefficient is 0.8.Creat a conclusion for this problem.
A 20 kg block is held in place on an incline plane as shown by a rope that passesover a frictionless pulley at B and then over a fixed cylinder at C where thecoefficient between the rope and the fixed cylinder is 0.2. Given an angle ofincline, A = 25°, if a force of P = 200 V is applied to the end of the rope,(a) Will the block move if the coefficient of static friction between the block and theinclined surface is M, = 0.56?(b)If impending motion exists, will the block tip or slip?
A 3.1 meter ladder with a mass of 24 kg rests against a wall. Neglect the friction between the ladder and the wall. If the ladder is on the verge of slipping and the angle of the ladder with respect to the wall is 25◦, what is the coefficient μs of static friction between the ladder and the floor? A. 0.15 B. 0.23 C. 0.36 D. 0.50
Box A weighs 1000N and has a height of H1=3m and width W1=2m. Box B weighs 800N. the static friction coefficient between the boxes is uA=0.7 and the static friction coefficient between box B and the ramp is uB=0.5. Find the max allowable angle for the following instances where no motion occurs, box A and B remain stationary. 1) Box A slides, Box B remains stationary 2) Box A tips, Box B remains stationary 3) Box B slides, Box A remains stationary on block B
Fred pushes a 55 kg refrigerator with a force P = 100 N inclined at 30° from the horizontal at 1.60 m from the floor as shown in the diagram. The coefficient of static friction between the floor and the refrigerator is 0.40.1. Which among the choices shows the limiting value of the frictional force between the refrigerator and the floor?A) 90.9 NB) 195.8 NC) 108.8 ND) 490 N2. Is the refrigerator not moving, moving, or on the verge of moving? Prove this through calculations.3) Write the correct moment equilibrium equation about A for the refrigerator. (Just use P, don't use P =100)
The crate shown is held against wedge B by a spring. The spring is 92.5% of its original uncompressed length l=2.50m , and the spring constant is given as k=1350N/m . The coefficient of static friction at all contacting surfaces is μs=0.150 . The mass of the crate is m=28.0kg . The angle is θ=14.0∘ . Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move.(Figure 1) Part A - Determining the normal force exerted by the crate on the wedge Determine the normal force Nc that the crate exerts on the wedge when the system is at rest. Express your answer to three significant figures and include the appropriate units. Part B - Finding the smallest horizontal force P to move the crate upward Determine the magnitude of the smallest horizontal force P that is necessary to begin moving the crate upward. Express your answer to three significant figures and include the appropriate units.