1. A 20-kg block A is positioned on a 60-kg plate B, as shown in Figure 1. Ignoring the mass of the rope and pulley, and given the provided coefficients of kinetic friction, determine the time it takes for block A to slide 0.5 m on the plate starting from rest. 0.5 m B MAB = 0.2 MBC = 0.1 30° Figure 1: Weight-pulley system on a sloped plane

1. A 20-kg block A is positioned on a 60-kg plate B, as shown in Figure 1. Ignoring the mass of the rope and pulley, and given the provided coefficients of kinetic friction, determine the time it takes for block A to slide 0.5 m on the plate starting from rest. 0.5 m B MAB = 0.2 MBC = 0.1 30° Figure 1: Weight-pulley system on a sloped plane

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 7.3P: Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair...

See similar textbooks

Similar questions

Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.
The 40-lb spool is suspended from the hanger GA and rests against a vertical wall. The center of gravity of the spool is at G and the weight of the hanger is negligible. The wire wound around the hub of the spool is extracted by pulling its end with the force P. If the coefficient of static friction between the spool and the wall is 0.25, determine the smallest P that will extract the wire.
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.
The 60-lb plank rests on a frictionless roller at A, and the 20-lb triangular support BD. Both bodies are homogenous. The coefficients of static friction are 0.4 at B and 0.3 at D. Determine the largest force P that can be applied to the plank without initiating motion.
The contact surface between the 36-lb block and 20-lb homogenous cylinder is frictionless. Can the system be in static equilibrium 0n the rough inclined plane?
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 block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.
The 3600-lb car with rear Wheel drive is attempting to tow the 4500-lb crate. The center of gravity of the car is at G, and the coefficients of static friction are 0.6 at B and 0.2 at C. Determine if the crate will slide.
A block with a mass of 100 kg (left-block) is connected to another block of mass M (right-block) by a cable that passes over a fixed drum as shown below. The coefficient of static friction between the left-block and the floor is 0.45, between the right-block and floor is 0.4, and between the cable and the fixed drum is 0.25. Ignore tipping (overturning). Determine the minimum mass of the left-block for which motion does not occur.
Arope is attached to the top corner of a 450-N block, passes over a fixed drum, and is attached to another block as shown in Fig. the 450-N block and the floor is 0.30; between the rope and the drum, 0.60. Determine the maximum mass of block B for which no motion occurs. The coefficient of friction between 20° 1.0 m 450 N B -0.6m
The coefficient of kinetic friction between the 30-mm- diameter pin and the pulley is 0.25. Calculate the tension T required to (a) raise the load and (b) to lower the load at a constant speed. Neglect the mass of the pulley. To 250 mm - 30 mm 500 kg 27- ☎
show complete solutionwrite legiblyshow diagrams