2. At a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light, frictionless pulley and is connected to an 80.0-kg box on a horizontal roof as shown below. A 50.0-kg bag of gravel rests on top of the box. The coefficients of friction between the box and the roof are also shown. Gravel Box His 0.700 Mk = 0.400 = Concrete A. Find the friction force on the bag of gravel and box. B. Suddenly a worker picks up the bag of gravel. Find the speed of the bucket after it has descended 3.00 m from rest.

2. At a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light, frictionless pulley and is connected to an 80.0-kg box on a horizontal roof as shown below. A 50.0-kg bag of gravel rests on top of the box. The coefficients of friction between the box and the roof are also shown. Gravel Box His 0.700 Mk = 0.400 = Concrete A. Find the friction force on the bag of gravel and box. B. Suddenly a worker picks up the bag of gravel. Find the speed of the bucket after it has descended 3.00 m from rest.

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

Similar questions

A force of 39.0 NN is required to start a 6.0-kgkg box moving across a horizontal concrete floor. If the 39.0-NN force continues, the box accelerates at 0.60 m/s2m/s2 . What is the coefficient of kinetic friction? Express your answer using two significant figures.
14. A 150 kg motorcycle starts from rest and accelerates at a constant rate along a distance of 350m. The applied force is 250 N and the coefficient of kinetic friction is 0.03. a. Draw a free-body diagram for the motorcycle showing all applied forces to scale. Next to that diagram show the direction of the acceleration; b. Find the net force applied to the motorcycle; c. Find the acceleration of the motorcycle; d. What is its speed at the end of 350 m? e. Find the elapsed time of this acceleration.
A sled weighing 53.5 N is pulled horizontally across snow so that the coefficient of kinetic friction between sled and snow is 0.100. A penguin weighing 70.5 N rides on the sled, as in the figure below. If the coefficient of static friction between penguin and sled is 0.700, find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off.
3. Two blocks A and B are connected by a rope and pulled with some force F along a frictionless horizontal surface, as shown. B a. Draw a free-body diagram for each block. b. Write Newton's second law for each block and obtain equations for the x and y directions. c. If the tension in the rope is given by T = F/3, find the ratio of the masses, ma/mg.
Use the value of g = 9.80 [m/s^2]
4.0 cm 2.0 cm 3.0 cm 3.0 cm In the figure above, q = 3.05 nC, 92= 6.10 nG, and q3 = 6.10 nC. If the net force on q is 0, then what would q be? Answer:
#o yolbese 2. A 76.0-kg person is being pulled away from a burning building as shown in figure below. Calculate the tensions T1 and T2 in the rope if the person is momentarily motionless. 18 3s.0 enouvovs e uigke iiedyeCnu cdud 000 09:16vsd 1 8S 0 1 A 3 3uiben abounsgru u apibas (ed a9 3 0 oP Beto jog U0! .HOWGH S7197 a: eur
The block shown is pulled across the rough horizontal surface at a constant speed by the force shown. If m-15 kg, F=10, and 0 = 37°, what is the coefficient of kinetic friction between the block and the surface? consider g = 10 m/s2. A. 0.2055 B. 0.1555 C. 0.05547 D. None E. 0.2555
Figure 3 shows a 150 kg block on a ramp. If the force applied to the block initially at rest is 800 N and the coefficient of static friction is 0.20, determine the magnitude and direction of the friction force.
A 2.00-kg object B is connected with a string to a 3.00-kgobject A, which is connected with a second string over a massless, frictionless pulley to a 8.00-kg object C. The strings have negligible mass and do not stretch, and the level tabletop is frictionless. Calculate the tension ?1. ?1= N Calculate the tension ?2. ?2= N Calculate the acceleration ? of the system. ?= m/s2
10. In the figure below, a mass of 500 kg is held motionless in the air by a 120-kg boom and a rope. Find the tension in the rope. Find the force exerted on the boom by the pin at P. The angles are 0 = 30.0° and o = 45.0°. P
Greg is diving of the 20 m board. As he falls gravity pulls him with a weight of 800 N. 100 n of friction is pushing against his motion. What is his net force