A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the truck’s flatbed is 0.350, and the coefficient of kinetic friction is 0.320. (a) The truck accelerates forward on level ground. What is the maximum acceleration the truck can have so that the crate does not slide relative to the truck’s flatbed? (b) The truck barely exceeds this acceleration and then moves with constant acceleration, with the crate sliding along its bed. What is the acceleration of the crate relative to the ground?
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the truck’s flatbed is 0.350, and the coefficient of kinetic friction is 0.320. (a) The truck accelerates forward on level ground. What is the maximum acceleration the truck can have so that the crate does not slide relative to the truck’s flatbed? (b) The truck barely exceeds this acceleration and then moves with constant acceleration, with the crate sliding along its bed. What is the acceleration of the crate relative to the ground?
Solution Summary: The author explains the co-efficient of static and kinetic friction. The free body diagram is given below.
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the truck’s flatbed is 0.350, and the coefficient of kinetic friction is 0.320. (a) The truck accelerates forward on level ground. What is the maximum acceleration the truck can have so that the crate does not slide relative to the truck’s flatbed? (b) The truck barely exceeds this acceleration and then moves with constant acceleration, with the crate sliding along its bed. What is the acceleration of the crate relative to the ground?
A 180-kg crate is sitting on the flatbed of a moving truck. The coefficient of sliding friction between the crate and the truck bed is 0.30. Two taut cables are attached to either side of the crate.
Each cable can exert a maximum horizontal force of 650 N either forward or backward if the crate begins to slide.
If the truck stops in 1.8 s, what is the maximum speed the truck could have been moving without breaking the cables?
a block is sliding down a ramp with an external force (in addition to friction) applied up the ramp so that the block has a constant velocity and the acceleration is 0. if the ramp is inclined at 35 degrees up from the horizontal, and the coefficient of friction between the block and the ramp is 0.1, what is the external force that is applied? the mass of the block is 0.4kg.
A hunter is pulling his sled 45 kg in mass behind him on snow. He exerts a pull of 170 N in magnitude and at 21 degrees above the horizontal to ensure he could move at a constant acceleration through the snow-covered land. The coefficient of friction between the sled and the snow is 0.43. What is the hunter's acceleration (could be positive or negative)?
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