A body of mass (M) 10 kg is initially stationary on a 45° inclined plane as shown in figure. The coefficient of dynamic friction between the body and the plane is 0.5. The body slides down the plane and attains a velocity of 20 m/s The distance
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- The tensions of a flat belt are;tight side 500N and slack side 180N.the angular speed N and diameter D of the pulley are 280rev/min and 20cm respectively.if the coefficient of friction between the belt and the pulley 0.6 and the mass m of the belt is 1.2kg/m, including centrifugal tension, Determine; (a) initial tension of the belt (b) angle of lap in degrees (C) power transmitted in the kilowatt (D) maximum power attainable in kilowatt- H1. A wooden block of mass m is pushed over a floor in a straight line in the x direction with a constant velocity vo > 0. At time t = 0, when the block is at position x = 0, it is no longer pushed and the block experiences only a constant sliding friction force F in the negative x-direction until it comes to rest. (i) Write down the equation of motion of the block for t > 0. Calculate the time, t, at which the block comes to a stop and also find the distance, d, travelled by the block from the time when the pushing is stopped to the time when it comes to rest. (ii) Calculate the work done by the friction force from x = 0 to x = d, and then show that it is equal to the change in the kinetic energy of the block.An aeroplane required for take off speed of 80 km/h, the run onthe ground being 100m. The mass of the aeroplane is 10000 kgand coefficient of friction between the plane and ground is 0.2.Assume that the plane accelerates uniformly during the take off.What is the maximum force required by the engine of the plane fortake off.
- Two blocks having the weights and positions shown in Fig. P-1243 rest upona frame which rotates about its vertical axis at a constant speed. Thecoefficient of friction between the blocks and the frame is 0.20. The weightand friction of the pulley being neglected, at what speed in rpm will theblocks start to slide2 What is the tension in the cord at this instant?A cord passing over a pulley connects two masses, as shown, where m1 = 3.80 kg and m2 = 7.20 kg. The system accelerates with a magnitude of 0.94 m/s2. The coefficient of kinetic friction between the masses and the incline is the same for both masses. Assume the pulley is frictionless, and the cord is massless. (Due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in WebAssign.) What is the tension (in N) in the cord?pls send me answer of this question all the parts pls and i will rate you sure, pls solve a,b,c and d and also a and b A 200-kg dragster (racing car) exerts a constant force of 4000 N during a race. The coefficient of kinetic friction between the tires and the pavement is .15. If the drag strip is 1000 m long, determine:a. The net force on the dragster. b. The acceleration of the dragster. c. The time it takes for the dragster to finish the race.d. The dragster's velocity at the end of the race.The dragster now needs to slow down, so it opens a parachute. The force of air drag is 3500 N. The driver also locks the brakes of the dragster, and the coefficient of kinetic friction becomes .75. Determine:a. How long it will take to stop the dragster.b. The distance the dragster travels while stopping.
- A wooden block(s) of mass M= 400 gram and m = 100 gram is the total mass just starts to move when the hanger mass 200 gram. The tension in the cord is: O a. 2N O b. 0.5N O C. SN O d. 0.2N 400g 100g motion surface with friction 1200gThe two ramps pictured here each have a region of length L with kinetic friction coefficient uk and are otherwise frictionless. Identical masses m start at identical heights up the ramps, with the same initial velocity down the ramp. How do their final speeds compare when they reach the far right-hand side? (The answer requested here is qualitative and does not require detailed calculation). L m m Vi #0 Vi O Mass is moving faster in #1 The masses are moving at the same speed. Mass is moving faster in #2 O There is not enough information to decide. L Mk#0 1 2 m m Vf,1 V₁,2A boy is pulling a sled with a box (at constant ve- locity) up an inclined surface as shown in Fig. mass of the box and sled is 50 kg; the mass of the boy is 40 kg. If the coefficient of kinetic friction between the sled run- ners and the icy surface is 0.05, determine the minimum coefficient of static friction needed between the boy's shoes and the icy surface. The 25 G. 15
- A block of mass M1 resting on an inclined plane is connected by a string and pulleys to another block of mass M2 as shown in Fig. Find the tension in the string and acceleration of the blocks. Assume the coefficient of friction between the blocks M1 and the plane to be 0.2. M1=1500N , M2=1000N . Angle of inclined glane = 45 degrees-1m 1) A block of mass M is dropped from rest on the spring as shown in the figure. The spring compresses a maximum of 25 cm. Calculate the speed of the block when the compression of the spring is 15 cm. (M = 5 kg, h=1 m, k = 1000 N/ m)1,V 3 46| Asiacell K/s the system blocks shown below is in equilibrium, the weight of block A is 10 kN and for block B is 35 kN . The coefficient of friction between A and surface is 0.2 and between two block :A and B is 0.15. Answer the following P=40KN الخيار رقم 1 5 نقاط The direction of friction force between two blocks which * effect on block A is in First Quarter Second Quarter Third Quarter Fourth Quarter