8-45. The man has a mass of 60 kg and the crate has a mass of 100 kg. If the coefficient of static friction between his shoes and the ground is , = 0.4 and between the crate and the ground is c 0.3, determine if the man is able to move the crate using the rope-and-pulley system shown. 8 = C 30° A 45° B
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- Problem 7.33- Enhanced with Expanded Hints Two packages at UPS start sliding down the 20.0 ramp shown in (Eigure 1). Package A has a mass of 2.00 kg and a coefficient of kinetic friction of 0 300 Package 8 has a mass of 25.0 kg and a coefficient of kinetic friction of 0.110. For help with math skills, you may want to review Vector Components Figure B A 1 of 1 2.00 m 20.0° Part A How long does it take package A to reach the bottom? Express your answer with the appropriate units. View Available Hint(s) At Value Submit #A Provide Feedback Units ?What If? If the incline under m, is rough, what is the minimum value of the coefficient of static friction M for which the system will not move?(11%) Problem 5: A book is resting on a horizontal tabletop. The book is stationary and there are no extemal forces applied to the book. If necessary, use Fs for the force of static friction and Fk as the force of kinetic friction.
- In the figure below, a climber leans out against a vertical ice wall that has negligible friction. Distance a is 0.956 m and distance L is 2.00 m. His center of mass is distance d = 0.944 m from the feet-ground contact point. If he is on the verge of sliding, what is the coefficient of static friction between feet and ground? |---Select-- v com-11-2) An object with a mass of 10 kg is initially at rest at the top of a inclined plane that rises at 30° above the horizontal. At the top, the object is initially 8.0 m from the bottom of the incline, as shown in the figure. When the object is released from this position, it eventually stops at a distanced from the bottom of the inclined plane along a horizontal surface, as shown. The coefficient of kinetic friction between the horizontal surface and the object is 0.20 and between the incline and the block is 0.12. Find the distance d. ( Take the air resistance as negligible). 8.0 m 30°
- A string can support a stationary hanging load of mass 25 kg before breaking. a) Calculate the maximum tension that the string can support. b) Suppose one end of the string is attached to an object of mass m = 3 kg, while the other end is fixed to the center of a frictionless table as shown in the figure. When given an initial speed, the object moves along a horizontal circle of radius R = 0.8 m. Calculate the maximum speed the object can have before the string breaks.18:58 1 question 5 of 9 Two blocks are connected by a massless rope over a massless, frictionless pulley, as shown in the figure. The mass of block 2 is m₂ = 10.9 kg, and the coefficient of kinetic friction between block 2 and the incline is μk 0.200. The angle 0 of the incline is 33.5°. If block 2 is moving up the incline at constant speed, what is the mass m₁ of block 1? m₁ = 7.22 kg Send a chat OThe crate is being pulled. coefficient of friction between ramp and floor non-sliding=0.300 sliding=0.250 0.450 m VIZUA 50 kg 0.750 m 50° Calculate for the highest value of force that can be applied to the crate without causing it to tip over?