A force F is used to hold a block of mass m = 4.62 kg on an incline as shown in the diagram. The plane makes an angle of Ø = 26.9° with the horizontal and Fis perpendicular to the incline. The coefficient of static friction between the plane and the block is 0.206. What is the minimum force, F, necessary to keep the block at rest?

A 1,420-N crate is being pushed across a level floor at a constant speed by a force F of 350 N at an angle of 20.0° below the horizontal, as shown in the figure a below. F F 20.0° b (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) 20.0⁰ (b) If the 350-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). m/s² Need Help? Read It

A box of mass 5.9 kg is sliding down a ramp, as shown in the picture. The coefficient of kinetic friction between the ramp and the box is 0.4, while the angle of the ramp with the ground is 30°.     What is the size of the friction force?

A 1,480-N crate is being pushed across a level floor at a constant speed by a force of 350 N at an angle of 20.0° below the horizontal, as shown in the figure a below. F 20.0° / 20.0° a b (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 350-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). m/s²

A block of mass M1 = 3 kg rests on top of another block of mass M2 = 5 kg. As shown in the figure, the top block is connected by a cord to a wall at left. The bottom block rests on a frictionless inclined plane of angle theta = 20o and has a force F applied to it down the plane. If the minimum force for which the bottom block will begin to slide has magnitude F = 2.5 N, what is the coefficient of static friction (us) between the two blocks?

A 1,500-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in the figure a below. 20.0° F F 20.0⁰ (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 370-N force is instead pulling the block at an angle of 20.0⁰° 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). m/s²

A block of mass m= 13.5 kg rest on inclined plane with the coefficient of static friction of us= 0.12 between the block in the plane. The inclined plane is L= 6.3 m long and it has a height of h= 3.8 m at its tallest point. What angle, Θ in degrees, does the plane make with respect to the horizontal? What is the magnitude of the normal force, Fn in Newton’s, that acts on the block? What is the component of the force of gravity along the plane, Fgx in Newton’s? Will the block slide?

A 1,500-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in the figure a below. F 20.0° / b 20.0° (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) 0.220 X Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error.

Three objects are connected as shown in the figure.  The strings and frictionless pulleys have negligible masses.  The coefficient of kinetic friction is 0.25 and static friction is 0.30.  Block A has a mass of 3 kg and block B has a mass of 4 kg.  a) What is the maximum mass block C can have before block B will start to move?  b) If block C has a mass of 7 kg. and was 1 m above the ground, how long would it take block C to hit the ground starting from rest?

A woman exerts a horizontal force of 145 N on a box with a mass of 37.2 kg If the box doesn't move, what's the magnitude of the static friction force (in N)?