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QUESTION 5 A 1.8 kg block is on a horizontal surface which has a coefficient of...
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A. A block is pulled along a horizontal surface by a force of 12.0 N. The block has a mass of 4.00 kg and it accelerates at 2.00 m/s. Find the coefficient of kinetic friction for the interface between the block and the surface. B. A stone falls vertically through the air and experiences a drag force. If the stone's mass is 6.00 kg. and the drag force (upwards force) is 14.0 N, what is the acceleration of...
A 17.5 kg block is dragged over a rough, horizontal surface by a constant force of 70.4 N acting at an angle of 27.5◦ above the horizontal. The block is displaced 46.9 m, and the coefficient of kinetic friction is 0.119. The acceleration of gravity is 9.8 m/s2 . 17.5 kg μ = 0.119 Find the work done by the force of friction. Answer in units of J.
A 29.3 kg block m1 is on a horizontal surface,
connected to a 5.70 kg block m2by a massless string as
shown in the Figure. The pulley is massless and frictionless.
A force of 203.3 N acts on m1 at an angle of
29.7o. The coefficient of kinetic friction between
m1 and the surface is 0.225. Determine the upward
acceleration of m2.
ml m2
Question 7 A 0.73 kg block is placed on a horizontal surface with a coefficient of kinetic friction of 0.122. The block is pressed against a spring that has a spring constant of 683 N/m until it has compressed the spring by 13.7 cm. When the block is allowed to move freely, the spring pushes the block 10 cm along the horizontal surface at which point it encounters an upward slope with an angle of 29.0°. This slope has the...
A block, of weight 100 N, rests on a horizontal surface. The coefficient of kinetic friction between the surface and the block is 0.5. A force, with horizontal component of 40 N and a vertical component of 60 N is applied to the block (i.e., F= 40i +60j Newtons). Calculate the acceleration of the block.
Side 7. A 10.0 kg block is at rest on a rough horizontal surface. A force of F - 50.0N @ 35° is applied to the vie block, as shown below. The coefficients of static and kinetic friction between the block and the horizontal surface are: Hs = 0.55 and thk = 0.35. Will the block move? If not, explain why not. If so, determine its acceleration. Your answer must include a free-body diagram. (Hint: compare the horizontal component of...
A block of mass m=2kg is placed on a horizontal surface with which its coefficient of kinetic friction is 0.5. Determine the magnitude of the force applied to the block at an angle of 53 degrees above the horizontal that would accelerate the block at 2 m/s^2.
A block of mass m2 on a rough, horizontal surface is connected to a ball of mass m1 by a lightweight cord over a lightweight, frictionless pulley as shown in the figure. A force of magnitude F at an angle ?θ with the horizontal is applied to the block as shown, and the block slides to the right. The coefficient of kinetic friction between the block and surface is ??μk. Determine the magnitude of the acceleration of the two objects.
1. A block of mass m = 5.0 kg is pulled along a horizontal floor or up the ramp by a force of magnitude F = 50 N. The coefficient of kinetic friction between the block and surface is 0.15 and the magnitude of the angle θ = 25.0°. (a) Make a free-body diagram of the block for each case. (b) Calculate the magnitude of the normal force and kinetic friction force for each case. (c) Calculate the acceleration of...
a 20 kg block moves on a horizontal surface. A force F that has a magnitude 80 N and direction 30.0 above the horizontal acts on the the block and the block slides along the surface. If the coefficient of kinetic friction between the block and the surface is Uk=20, what is the magnitude of the friction force that the surface exerts on the block?