A 70 kg skier is sliding down a snowy slope of 30 degree with the ground. The friction force is 50N Find the coefficient o kinetic friction for the skier 13:
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- A student is attempting to move a 30-kg mini-fridge into her dorm room. During a moment of Inattention, the mini-fridge slides down a 35 degree incline at constant speed when she applies a force of 25 N acting up and parallel to the Incline. What is the coefficient of kinetic friction between the fridge and the surface of the incline?Consider the 52.0-kg mountain climber shown below. (a) Find the tension in the rope and the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, assume negligible force exerted by her arms. (b) What is the minimum coefficient of friction between her shoes and the cliff?A physics major is cooking breakfast en she notices that the frictional force between her steel spatula and Teflon trying pan is only 0.200 N. Knowing the coefficient of kinetic friction between the two materials, she quickly calculates the normal force. What is it?
- Suppose you have a 120-kg wooden crate resting on a wood floor, with coefficient of static friction 0.500 between these wood surfaces. (a) What maximum force can you exert horizontally on the crate without moving it? (b) If you continue to exert this force once the crate starts to slip, what will its acceleration then be? The coefficient of sliding friction is known to be 0.300 for this situation.A 250.0 N box is placed on a horizontal surface and a force of 150 N is applied at anangle of 30.0o from the horizontal. As a result, the box slides along the surface with anacceleration of 05.00 m/s2What is the coefficient of friction between the box and the surface?A 5.00 [kg] block is pushed by a 30.0 [N] force against a rough wall that is inclined at an angle of 70°. What should be the minimum coefficient of static friction μsμs so that the block will not slide down the ramp?
- A 107 N sled is pulled up a 35 degree slope with an acceleration of 1.4 m/s ^ 2 by a force of 172 What is the coefficient of kinetic friction between sled and slope?An 8.0-kg box is released on a 30degrees incline and accelerates down the incline at 3.0 m/s2. Find the frictional force impeding its motion. How large is the coefficient of friction in this situation?A stationary box has a maximum value of static friction of 484.22 N and a normal force of 682 N. What iscoefficient of static friction?
- A horizontal force of 200 N drags a 12 kg chest across a level floor where Uk= 0.4, find the resulting acceleration.Tim pushes a 195kg lawnmower with a force of 850N at an angle of 35 degrees with respect to the horizontal. If it accelerates along the level grou D at 2.90 m/s2, what is the coefficient of Kinetic Friction between the mower and the ground.A rubber block with a mass of 10 kg is on a surface that has a coefficient of static friction (µs) of 0.8. What is the minimum force needed to get it moving? If the surface is inclined to an angle of 30º, will the block slip?