A 30-lb crate of eggs rests on the seat of a truck. The seat may be represented as a straight line at a 5 degree slope. Note that the coefficient of friction between the crate and the seat is 0.70. If the driver of the truck forced to suddenly apply the brakes, what will be the maximum deceleration will cause the crate to slide on the seat?

The uniform 52-kg slender bar is initially at rest on a smooth horizontal plane when the forces are applied. If P₁ = 20 N and P₂ = 86 N, they are constant and are always perpendicular to the slender bar, determine angle (in degree) when time t = 0.40 s has passed. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. 0.75 m P₁ Your Answer: Answer 1.75 m 0.5 m P₂

1 Problem During a particularly snowy winter in Charlotte, a child of mass m slides down a ramp starting at rest from point A and encounters the melted grassy area at B before coming to a full stop at C. Assume the ice is frictionless. The height of point A is hĄ and the distance between B and C is L. What is the coefficient of friction of the grass, k? Assume that g = 9.81 m/s², ha = 5 m, m = 20 kg, and L = 10 m. hA P JA Ice B Grass L C

If the uniform cabinet has weight of 200 lb, and the coefficient of static friction between the cabinet and the ground is g = 0.14, determine the minimum force P that can make the cabinet slide. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point and proper unit. Take g = 32.2 ft/s². Your Answer: Answer P 4 ft units A -1 ft-1 ft- 3.5 ft B