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A block slides down a 30.0o incline at a constant velocity. What is the coefficient of kinetic friction?
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- moodle.nct.eduom/mod/qi -Learning Portal Courses - Reports - e-Services- Academic Departments - ETC - CIMS - A 17kg crate resting on a horizontal surface is pushed as shown. If the coefficient of static friction u, between the surfaces is 0.24, what is the minimum force (F) required to start the motion? O a 4.08N O b. 70.83N Oc 39.98N Od. 694.17N Windows buut An object of mass Skg is sliding with a constant velocity of 10m/s on a frcitionless horizontal table. The force needed to keep the object moving with the same velocity is. 144 4- # 4. 6. V.The figure shows a 7.0 kg block slides down on an inclined rough plane at constant acceleration of 2.0 m/s?. Calculate the coefficient of kinetic friction. 30° Select one: O A. 0.25 O B. 0.34 O C. None O D. 0.49 O E. 0.45A block slides down a rough 30°-incline with an acceleration of 2 m/s?. The coefficient of kinetic friction u between the block and the surface of the incline is: A. 0.34 В. О.17 C. 0.22 D. 0.28 E. 0.81 O A O B , C O E
- A 100 gram wooden block is placed on an inclined ramp and released from rest. The ramp is tilted at an angle of 25 degrees with thek horizontal. The coefficient of static friction between the block and the ramp is 0.300 and the coefficient of kinetic friction is 0.200. 25° 35. The acceleration of the block has a magnitude of c. 2.37 m/2. A. 4.14 m/ В. 2.18 т D. 1.01 m/ E. zero.1)A shingle slides down a roof having a 30 angle and falls off with a speed of 2.0 m/s.a. How long will it take to hit the ground?b. Calculate the highest point reached by it. 2)A 20.0 kg trunk is pushed across the floor of a moving van by a horizontal force. If thecoefficient of kinetic friction between the trunk and the floor is 0.255, what is the magnitudeof the frictional force opposing the applied force?5. A force of 36.ON accelerates a 6.0kg block at 7.0m/s2 along a horizontal surface. How large is the friction force? What is the coefficient of kinetic friction?
- The block shown is pulled across the rough horizontal surface at a constant speed by the force shown. If m=14 kg, F=16, and 0 = 37°, what is the coefficient of kinetic friction between the block and the surface? consider g = 10 m/s2. %3D A. 0.298 B. 0.198 C. 0.09801 D. None E. 0.248A supermarket pushcart is being pushed at 45 degrees with respect to the horizontal from the starting point to the cashier, which is 25 feet away. The cart is 5kg, it contains 2 boxes of 10-1b flour and seven packs of half-kilogram sugar. The coefficient of friction between the wheels and the floor is 0.03. a. What force is required? b. How much force is required?Push mo yan teh. A 3.00 [kg] block is pushed by a 30.0 [N] force against a rough wall with coefficient of static friction u. What should be the minimum coefficient of friction so that the block will not fall? Push- O -5.88 O 0.98 O -0.98 O 5.88 o o o
- The block shown is pulled across the rough horizontal surface at a constant speed by the force shown. If m=5 kg, F=11, and 0 = 37°, what is the coefficient of kinetic friction between the block and the surface? consider g = 10 m/s?. m A. 0.3025 B. 0.3525 C. None D. 0.4025In the figure, the block of mass 2.00 kg accelerates down the inclined plane. The coefficient of kinetic friction is 0.200 and angle of the inclined plane is 30.0°. What is the acceleration of the block? normal force N friction force f mg sine mg cose mg O 3.05 mis? O 5.05 m/s? O 2.05 m/s? O 4.05 m/s?A 5kg mass rests on a horizontal table. A force F = 20N applied parallel to the table surface and the mass is about to move, what is the coefficient of static friction between the mass and the table surface? O A. 0.5 O B. 0.25 O C. 0.2 D. 0.4