Chapter 17, Problem 32P

Please help with the attached problem.

Two bodies A and B, each weighing 96.6 lb, are connected by a rigid bar of negligible weight attached to them at their gravity centers. The coefficient of friction at the wall and floor is 0.268 if the bodies start from rest at the given position, determine the acceleration of B at this instant. Simplify the solution by creating dynamic equilibrium and taking a moment summation about the intersection of the wall and floor reactions. Explain why these reactions pass through the gravity center of B and A respectively.

0.7 m 0.4 m B -0.75 m- -0.5 m- The lift truck has a mass of 60 kg and mass center at G. The lift truck lifts a 150 kg spool. The rear wheels in the back freely rotate and front wheels in the front are always slipping. Given that the coefficient of kinetic friction between the wheels and the road is uk = 0.25. Neglect the mass of the wheels. a) Determine the normal reactions on the pair of front wheels and rear wheels if the truck lifts the spool with an acceleration of 5 m/s2. b) After lifting the spool, the truck travels forward with a constant deceleration of 3 m/s2 with speed of 1 m/s.

The handcart has a mass of 200 kg and center of mass at G. Determine the largest magnitude of force P that can be applied to the handle so that the wheels at A or B continue to maintain contact with the ground. Neglect the mass of the wheels. The normal reaction at Ais The normal reaction at B is The acceleration at Gis The greatest value of Pis #KN KN B Ge -0.3m-02 m-04 m- O 0.5 m A

Mass 2 has a hole bored through it and the cord is threadedthrough the hole but is not touching mass 2. The cord isattached to mass 3 which is pushing mass 2. What is theforce between the masses on the frictionless surface?

This is a dynamics problem. Answers:  F = 60.88 lb,                  aG = 13.6 ft/s2,                  NA = 44.2 lb,                  NB = 61.2 lb

A man pushes the lawn mower at a steady speed with aforce P that is parallel to the incline. The mass of themower with attached grass bag is 50 kg with mass centerat G. If θ = 15°, determine the normal forces NB and NCunder each pair of wheels B and C. Neglect friction. (useg = 9.81 m/s2)NB =NC =

Please don't provide handwritten solution ...

Q1: The tractor has a weight of 4500 lb with center of gravity at G. The driving traction is developed at the rear wheels B, while the front wheels at A are free to roll. If the Q2: The mine car and its contents have a total mass of 9 Mg and a center of gravity at G. If the coefficient of static friction between the wheels and the tracks is u, = 0.4 when the wheels are locked, find the normal force acting on the coefficient of static friction between the wheels at B and the ground is u, = 0.5, determine if it is possible to pull at P = 1350 lb without causing the wheels at B to slip or the front wheels at A to lift off the ground. front wheels at B and the rear wheels at A when the brakes at both A and B are locked. Does the car move? 10 kN 0.9 m G 0.15 m 3.5 ft 1.25 ft 0.6 m- 4 ft -1.5 m- 2.5 ft