45 mi/h 18 tons 13 tons rwwww.w Fig. P13.129

Q: A light train made up of two cars is traveling at 90 km/h when the brakes are applied to both cars.…

A: Given data: The light train made up of two cars is traveling at V1=90 km/h The mass of the car A is…

Q: Extensive testing of an experimental 900 kg automobile reveals the aerodynamic drag force F, and the…

A: To calculate the power required for the motion of the car at a particular speed can be calculated…

Q: Two wires AC and BC are tied at C to a sphere that revolves at a constant speed v in the horizontal…

A: Given Ball mass = 5 kg Maximum tension on the wire is 60 N To find Maximum velocity allowable for…

Q: During inelastic collision of two particles, which one of the following is conserved ? 1. total…

A: In all types of collisions, linear momentum is always conserved which means the total momentum of…

Q: 2. Two blocks of masses m, = 1 kg and m, = 0.30 kg are connected by a light inextensible cord…

A: a) Free Body Diagram: Given:m1=1 Kgm2=0.30 Kgμ=0.3F=6 N

Q: A mother and her child are skiing together, and the mother is holding the end of a rope tied to the…

A: From the textbook we get the figure as shown below,

Q: A man pulls a box with constant speed on a rough surface. Which of the following is true? O force >…

A:

Q: In a rocket, the kinetic energy imparted to the consumed and ejected fuel is wasted as far as…

A: The data given is, Speed of rocket = v The relative speed of expelled fluid = u

Q: A car of mass 2.5 tonnes moves on a level road under the action of 1 kN propelling force. The time…

A: Given                 mass, m = 2.5 tonnes propelling force, F = 1 kN    Initial velocity, u = 36…

Q: A79-kg woman holds a 6-kg package as she stands within an elevator which briefly accelerates upward…

A:

Q: L A hand pushes two blocks, block A and block B, along a frictionless table for a distance d. The…

A: Given, mA>mB

Q: An aircraft has a wing area of 20 m² and whose wings resemble the NACA 23012 with no flaps and is…

A: Given data Wing type : NACA 23012 Wing Area = A = 20 m2 Speed of aircraft = 250 kmph = 69.4444 m/s…

Q: A cue stick hits a cue ball with an average force of 38.0 N for a duration of 0.0280 s. If the mass…

A:

Q: An automobile weighing 4000 lb is driven down a 5° incline at a speed of 60 mih when the brakes are…

A:

Q: Hailstorms such as the one that broke the tiles on this roof cause billions of dollars of damage…

A: Given data: The mass of hailstone in case 1 is m1 = 0.2 kg. The speed of hailstone in case 1 is v1…

Q: An aircraft has a wing area of 20 m2 and whose wings resemble the NACA 23012 with no flaps and is…

A: Given data Wing type = NACA 23012 Wing area = 20 m2 Speed of aircraft = v = 250 kmph = 69.4444 m/s…

Q: A 4400-Kg airplane is flying at a constant speed of 370 km/h along a horizontal circular path. If…

A:

Q: A system of blocks is pulled by a force P. The string connecting blocks A and B passes over a pulley…

A:

Q: A 20-kg crate is subjected to force F = (2s² + 3)N, where s is the displacement in meter. If the…

A: Answer: The speed of the crate when it travels 10 m starting from rest: 5.5 m/s

Q: e= 45 3 m 大 5 m A 60-kg man sprints towards a river, attempting to grasp a 3-m rope connected to a…

A:

Q: A fighter pilot, whose mass is 72 kg, completes a vertical loop of radius R=333m with a constant…

A: Given: Mass m=72kg Radius R=333m Velocity V=285m/s True weight of the pilot W=mg=72×9.8=705.6N

Q: A trailer truck enters a 2 percent uphill grade traveling at 72 km/h and reaches a speed of 108 km/h…

A: Given data: Initial speed of trailer truck, v1 = 72 km/h. Final speed of trailer truck, v2 = 108…

Q: An automobile moving at a velocity of 40 km/hr is experiencing a wind resistance of 2 kN. If the…

A: Given: The moving velocity of automobile is u=40 km/hr. The wind resistance is F=2 kN. The changed…

Q: A locomotive exerts a constant force 200,000 lbs on a set of series-connected railroad cars weighing…

A:

Q: A 57-kg woman holds a 5-kg package as she stands within an elevator which briefly accelerates upward…

A: Given: The mass of the woman is mw=57 kg. The mass of the parcel is mp=5 kg. The acceleration of…

Q: A truck weighing 5 kips is traveling with a constant velocity of 55 mph when brakes are applied…

A: Weight of the truck, W=5 kips=5×4.4482 kNW=22.241 kNmass, m=22.2419.81=2.267×103 kgbreaking force,…

Q: It is said that the speed at which a belt or rope should run to transmit maximum power is that at…

A: Belt drives or rope drives are used for power transmission between two shafts carrying pulleys. The…

Q: An aircraft has a wing area of 20 m² and whose wings resemble the NACA 23012 with [ no flaps and is…

A: Given data Wing : NACA 23012 Wing area = A = 20 m2 Speed = v = 250 kmph = 69.4444 m/s Density of air…

Q: A 5.00 kg block is released from rest on a ramp that is inclined at an angle of 60.0° below the…

A: Given Data: The mass of the block is m = 5 kg. The angle of inclination is θ=60° The vertical…

Q: 3/103 The man and his bicycle have a combined mass of 95 kg. What power P is the man developing in…

A:

Q: A 2500-lb automobile is moving at a speed of 60 mi/h when the brakes are fully applied, causing all…

A: Write the given data with suitable variables: W=2500 lbu=60 mi/h=88 ft/s

Q: 9. A damaged 1200-kg car is being towed by a truck. Neglecting the friction, air drag, and rolling…

A: Given, m = 1200 kg

Q: A light train made of two cars travels at 72 km/h. The mass of car A is 18 Mg and the mass of car…

A: The initial velocity of the train,  Vi=72Km/hr (Multiply by 5/18 to change in km/hr to m/s) Vi=20…

Q: Determine the force with which the brake shoe of a diesel electric train must be pressed against the…

A:

Q: A 3590-lb car travels up the 7-percent incline shown. The car is subjected to a 45-lb aerodynamic…

A: Draw the free body diagram of the car.

Q: A car with passengers has a mass of 1 200 kg and a frontal area of 1.8 m?. It is traveling up a…

A: Given dataMass M = 1200kgFrontal area A = 1.8m2Gradient Gr = 125 = 0.04Rear axle ratio G =…

Q: In a railroad classification yard, a 69-Mg freight car moving at 1.5 m/s at A encounters a retarder…

A:

Q: 3/113 The man and his bicycle have a combined mass of 95 kg. What power P is the man developing in…

A: Given:Mass of system=95KgSpeed,V=20Kmh=20×10003600ms=5.55ms

Q: travels at 85kph around a banked curve with a radius of 250 m. What should be the super-elevation so…

A: Ans: option (c)  0.227

Q: (a) A 120-lb woman rides a 15-lb bicycle up a 3-percent slope at a constant speed of 5 ft/s. How…

A: a)              W=WB+WW=15+120=135 lbtanθ=3100θ=1.718° Power developed by the woman…

Q: A body that weighs W newtons falls from a height of 600 mm and strikes a spring whose scale is 7.00…

A: Option e 105N is the correct answer.

Q: A 2.66-kg steel ball is dropped from a plane to an ocean. If the  velocity of the ball just before…

A: Given, mass of the steel ball, m = 2.66 kg Velocity of ball just before reaching the surface of…

Q: A heavy goods vehicle of total mass 4.8 tonnes descends a hill with a gradient of 8 degrees from the…

A: Given: m=4.8 tonne = 4800 kg θ =8o FR = 880N u =72 km/h S =140m (1) Vertical height through which it…

Q: A ski lift has a one-way length of 1 km and a vertical rise of 200 m. The chairs are spaced 20 m…

A: Write the total mass of the ski lift, M=m x n Where m=Average mass and n=number of chairs placed.…

Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.