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A 3.040 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is us = 0.505 and the coefficient of kinetic friction is MK = 0.155. At time t = 0, a force F = 9.26 N is applied horizontally to the block. State the force of friction applied to the block by the table at times t = 0 and t > 0. 1 = 0 N 1 > 0 N Enter numeric value Consider the same situation, but this time the external force F is 18.7 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. 1 = 0 N 1 > 0 NA box of mass m = 18.5 kg is pulled up a ramp that is inclined at an angle 0 = 17.0 angle with respect to the horizontal. The coefficient of kinetic friction between the box and the ramp is MK = 0.335, and the rope pulling the box is parallel to the ramp. If the box accelerates up the ramp at a rate of a = 3.09 m/s, calculate the tension Fr in the rope. Use g = 9.81 m/s for the acceleration due to gravity. FT = Na A race car rounds one end of a speedway. This end of the track is a turn with a radius r of approximately 187 ft. If the track is assumed to be completely at and the race car is traveling at a constant 75.00 mi/h around the turn, what is the race car's centripetal (radial) acceleration ac ? Convert this result to SI units. a 0 || What is the force responsible for the centripetal acceleration in this case? 0 weight ac m/s2 What is the force responsible for the centripetal acceleration in this case? O weight O friction O gravity O normal To keep from skidding into the wall on the outside of the turn, what is the minimum coefficient of static friction Ms between the ace car's tires and the track? Ms =A constant applied force Fo of 11.0 N pushes a box with a mass m = 8.00 kg a distance x = 15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is 0.110. X Fp m Assuming that the box starts from rest, what is the final velocity of of the box at the 15.0 m point? Of = m/s If there were no friction between the box and the floor, what applied force Fnew would give the box the same final velocity? Fnew = NA statue is crated and moved for cleaning. The mass m of the statue and the crate is 150 kg. As the statue slides down a ramp inclined at an angle 9 = 40\Calculate the work Wnormal done by the normal force. Wnormal =