Question 1 A body slipping on a rough horizontal plane moves with a deceleration of 4.0 m/s?. What is the coefficient of kinetic friction between the block and the plane?
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- A contestant in a winter sporting event pushes a 45.0-kg block of ice across a frozen lake as shown. (a) Calculate the minimum force F he must exert to get the block moving. (b) What is the magnitude of its acceleration once it starts to move, if that force is maintained?Imagine that the block finally starts sliding down the plane with friction coefficient (i.e. kinetic friction). Would the speed at which the block reaches the bottom of the plane depend on its weight? Explain.A block accelerates at 4 m/s2 down a rough ramp, inclined at 38 degrees. What is the coefficient of kinetic friction between the block and the ramp? Include a sketch of the system (with a coordinate system) and a free body diagram.
- A contestant in a winter games event pulls a 60.0 kg block of ice across a frozen lake with a rope over his shoulder as shown. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (a) Calculate the minimum force F he must exert to get the block moving. (b) What is its acceleration once it starts to move, if that force is maintained?Hi please help with the following: Consider a 25-kg block sliding down a rough plane inclined at 30 degrees. The coefficient of kinetic friction between block and plane is 0.2 what is the free body diagram for the block?A 525 N block is on a rough, horizontal surface with an applied horizontal force as shown in Figure 1. (a) If a force of 295N is required to start the block in motion, what is the coefficient of static friction, us? (b) If force of 205 N is required to maintain the block at constant velocity, what is the coefficient of kinetic friction, uk?
- Please answer #4, remember to draw a Free Body Diagram, thanks!!!A 1,040-N crate is being pushed across a level floor at a constant speed by a force F of 400 N at an angle of 20.0° below the horizontal. (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 400-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).A block slides with constant speed under the action of the force shown (see figure 1.7)(A) How large is the retarding force?(B) What is the coefficient of kinetic friction between the block and the floor?
- ii) Explain how static friction and kinetic friction behaves over time as we increase the applied forceon an object. iii) How is static friction different from the maximum value of the static friction? (You must explainthe difference in terms of the way they are computed)(II) (a) A box sits at rest on a rough 33° inclined plane.Draw the free-body diagram, showing all the forces actingon the box. (b) How would the diagram change if the boxwere sliding down the plane? (c) How would it change ifthe box were sliding up the plane after an initial shove?(3) please show a free-body diagram, given and formula. Thanks! i'll rate.