- once answered Correctly will UPVOTE!! The motor M pulls in its attached rope with an acceleration a, = 9 m/s? . The coefficientof kinetic friction between the crate and the plane is lk = 0.2. Neglect the mass of thepulleys and rope. (Figure 1)8 = 30°Part ADetermine the towing force exerted by M on the rope in order to move the 80-kg crate up the inclined plane.Express your answer to three significant figures and include the appropriate units.• View Available Hint(s)HẢ?T =ValueUnits

Answered: Image /qna-images/answer/8352eeef-12f8-4046-81ff-962ea516693c.jpg

The motor M pulls in its attached rope with an acceleration a, = 9 m/s² . The coefficient of kinetic friction between the crate and the plane is 4k = 0.2. Neglect the mass of the pulleys and rope. (Figure 1) 0 = 30° Part A Determine the towing force exerted by M on the rope in order to move the 80-kg crate up the inclined plane. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HẢ ? T= Value Units

The motor M pulls in its attached rope with an acceleration a, = 9 m/s² . The coefficient of kinetic friction between the crate and the plane is 4k = 0.2. Neglect the mass of the pulleys and rope. (Figure 1) 0 = 30° Part A Determine the towing force exerted by M on the rope in order to move the 80-kg crate up the inclined plane. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HẢ ? T= Value Units

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 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

See similar textbooks

Similar questions

Block A in Fig. has mass 4.00 kg, and block B hasmass 12.0 kg. The coefficient of kinetic friction between block Band the horizontal surface is 0.25. (a) What is the mass of block C ifblock B is moving to the right and speeding up with an accelerationof 2.00 m/s2? (b) What is the tension in each cord when block B hasthis acceleration?
A block of mass M1 resting on a 20.7° slope is shown. The block has coefficients of friction μs = 0.745 and μk = 0.464 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass M2 = 2.62 kg. (a) What is the minimum mass M1 that will remain stationary and not slip? (b) If this minimum mass is nudged ever so slightly, it will start being pulled up the incline. What magnitude of acceleration will the minimum mass have?
A load of W (kN) with corners ABCD standing still in the truck bed wants to be transported.Since it is known that the load does not slide during the movement, the maximum acceleration that the truck can reach without tipping the load and Calculate the coefficient of friction between the load and the truck bed. (C represents the center of gravity of the load). W=6kN b=0.3m d=0.9m e=1.7m
a 7.4 lb block has a speed of v-2.4 ft/s to the left when the force of F=3.6t^3 lb is applied to the right. determine the velocity and position of the block when t= 0.2 seconds. the coefficient of friction at the surface is uk= 0.2. provide both a free body diagram and a kinetic diagram. the force is being applied in the opposite direction to the velocity of the block.
A brake mechanism is used to lower body A with a constant velocity of 3.0 m/s. The coefficient of friction between the brake and drum D is 0.40. Neglect the weight of the brake. Determine the mass of body A and the power dissipated by the brake. (hint: the normal force between the brake the and disk is not 1200 N)
The desk has a weight of 54 lblb and a center of gravity at GG. The coefficients of static and kinetic friction at AA and BB are μsμs = 0.5 and μkμk = 0.2, respectively. (Figure 1) Determine the initial acceleration of a desk when the man applies enough force FF to overcome the static friction at AA and BB. Find the vertical reaction on each of the two legs at AA.
(3/84) At the instant when ? = 30°, the horizontal guide is given a constant upwardvelocity ?0 = 2 m/s. For this instant calculate the force N exerted by the fixed circularslot and the force P exerted by the horizontal slot on the 0.5-kg pin A. The width of theslots is slightly greater than the diameter of the pin, and friction is negligible.
By using a forked rod, a smooth cylinder C having a mass of 0.5 kg is forced to move along the vertical slotted path (r = 0.4 θ) m, where θ is in radians. If the angular position of the arm is θ = (0.3 t3 ) rad, where t is in seconds. The cylinder is in contact with only one edge of the rod and slot at any instant. Find "the force of the rod on the cylinder at the instant t=2s" Find "the normal force of the slot at the instant t=2s" Find the "radius of curvature at t=2s" Find the "ψ angle at t=2s"
ANSWER AS SOON AS POSSIBLE 1) A box of mass m= 50kg which is sliding on a horizontal rough surface and momentarily comes to stop after compressing the spring by a distance of 120 mm. The spring has a spring constant k = 20kN/m and is initially in its equilibrium state. The initial speed of the box is 3.0m/s. a) What is the work done by the spring as the box is brought to a stop? b) Write an expression for the work done by friction during the stopping of the box (in terms of the coefﬁcient of kinetic friction). c) Determine the coefﬁcient of friction between the box and the surface.
The spring-mounted 0.8 kg collar A oscillates along the horizontal rod, which is rotating at the constant rate q = 6 rad/sec. The spring constant k equals 5 N /m and the coefficient of kinetic friction mk equals 0.4. At a certain instant, r = 0.2 m, which is increasing at the rate of 800 mm/s, while r = 0.3 m / s2. For this instant, calculate the friction force from the rod onto the collar and the elastic force on the collar. Indicate whether or not the elastic force points towards the origin O and then calculate the spring stretch. (Hint: the total normal force between the rod and the collar results from both the weight of the collar and the transverse normal force that is perpendicular to the rod on the plane of rotation of the rod.) PLEASE ANSWER ALL QUESTIONS!
The conveyor belt shown in (Figure 1) delivers each 12-kg crate to the ramp at A such that the crate's speed is vAvA = 2.5 m/s, directed down along the ramp. The coefficient of kinetic friction between each crate and the ramp is μk = 0.27. Determine the smallest incline θ of the ramp so that the crates will slide off and fall into the cart.
The block shown has a mass of 51kg and is acted upon by a horizontal force P. The coefficient of friction is 0.40 between the body and the incline. Calculate the magnitude P required (a) barely to prevent the block from slipping down the incline, (b) to give the block an acceleration of 2.4 m/s2 up the incline.