If an object with a mass of X kg sits on a frictionless table and another object with a mass of Y kg is connected to it by a wire over a frictionless pulley, how do you calculate the acceleration of the system and how do you calculate the tension of the wire?
A skier traveling at 31.3 m/s encounters a 25.9 degree slope. If you could ignore friction, to the nearest meter, how far up the hill does he go? 114 meters
A skier traveling at 31.3 m/s encounters a 25.9 degree slope. If you could ignore friction, to the nearest meter, how far up the hill does he go? 114 meters But...If the coefficient of kinetic friction in the previous problem was actually 0.07 and the slope 30 degrees, to the nearest meter how far up the hill does he go?
Three ropes are pulling on a blue ring. If F1=104 newtons and F2=134 to the nearest tenth of a newton what must F3 equal if the ring is not to move?
The 65 kg man in the roller coaster car is sitting on a bathroom scale. If he is traveling at 40.4 m/s at the point shown and the radius of the vertical coaster track is 62 meters to the nearest newton, what does the scale read? What would be the answer if the roller coaster was at the bottom of the track? (See attached fi
A student stands on a scale in an elevator that is accelerating at -0.9 m/s2. If the student has a mass of 68 kg, to the nearest newton what is the scale reading?
A plane traveling at 18.5 m/s is brought to rest in a distance of 135 meters. To the nearest hundredth of a m/s2 what is the magnitude of its acceleration? If the mass of the plane in the previous problem is 1.51 x 105 kg, to the nearest newton what is the magnitude of the retarding force?
A load of steel of mass 6000 kg rest on a flat bet truck. It is held in place by metal brackets which can exert a maximum horizontal force of 8000 N. When the truck is traveling 20 m/s, what is the minimum stopping distance if the load is not to slide forward into the cab?
Question: A curve of radius 56 m is banked so that a car traveling with a uniform speed of 54 km/hr can round the curve without relying on friction to keep it from slipping to its left or right. What is theta?
A car with linear momentum 8.0 x 10^4 kg* m/s brakes to a stop in 5.0 seconds. What is the magnitude of the braking force?
The mass of one small ball is 1.59 g, and the mass of another is 881 g. If the center to center distance between thse two balls is 13.5 cm, calculate the magnitude of the gravitational force that each exerts on the other. Please explain.
In the figure (see attachment) the coefficient of static friction between mass m1 and the table is 0.35, whereas the coefficient of kinetic friction is 0.25. a) What minimum value of m1 will keep the system from starting to move? m1 = ?kg b) What value of m1 will keep the system moving at constant speed? m1 = ?kg
Determine the time time tB, tC, and tD needed for a block of mass m to slide from rest at A to points B, C, and D, respectively. Neglect effects of friction. See attachment for picture.
A skier is moving at 20.0 m/s down a 30 degree slope. He encounters wet snow and slides 145 meters before coming to a stop. What is the coefficient of friction between the skis and the snow?
Please answer each question with step by step answers so I understand the solutions. Thanks! 1. The imperial units for mass is slugs, for length is feet and for time is seconds. The imperial units for force is a pound. What is a pound in terms of slugs, feet and seconds? 2. A box is on a sled. The sled is pulled up a hill
A 400-kg ice boat moves on runners on essentially frictionless ice. A steady wind blows, applying a constant force to the sail. At the end of an 8.0s run, the acceleration is 0.50 m/s^2. a. What is the acceleration at the beginning of the run? b. What was the force due to the wind? c. What retarding force must be appl
A rope of mass M and length L lies on a frictionless table, with a short portion Lo hanging through a hole. Initially the rope is at rest. 1) Find a general equation for x(t), the length of rope through the hole. 2) Evaluate the constants A and B so that the initial conditions are satisfied
SHM of blocks M and m with m riding on top of M. Find friction coefficient such that block m does not slip.
On a frictionless table a block of mass M=1.75 kg is attached to a spring of negligible mass whose force constant k= 60 nt/m. Riding on top of M but not attached to it, is a block m= .65 kg. The blocks execute SHM with amplitude Xm= .25 m. Find the minimum value of the coefficient of friction, u, between the two blocks, such t
Block M, with block m on top, executes SHM on frictionless surface. Find maximum amplitude for which m remains in place.
A block of mass M= 10 kg is on a frictionless horizontal surface. A small block whose mass is m= 1.0 kg is placed on the larger block. The coefficient of friction between the two blocks is u= .40. The two blocks execute SHM with a period T= 1.5 sec. Find Xm, the maximum amplitude possible, for which the small block does not sli
Please see the attached file for full problem description. Kathy and her friend go sledding. Out of curiosity, she measures the constant angle, , that the snow-covered slope makes with the horizontal. Next, she uses the following method to determine the coefficient of friction, k, between the snow and the sle
A crate is resting on a ramp that is inclined at an angle 0(thada) the horizontal.As 0(thada) is increased, the crate remains in place until 0(thada)reaches a value of 38.0 degrees. Then the crate begins to slide down the slope. (a) Determine the coefficient of static friction between the crate and the ramp surface. (b) The coef
A small, frictionless ball, mass M= 2.5 kg, rests on the surface of a rotating solid cone. The surface is at angle b= 30 degrees. The ball is held in place at distance L= 1.85 m from the apex by a cord. The cord exerts force T on the ball, parallel to the cone's surface. SEE ATTACHMENT #1 for a diagram showing parameters. Part
A 25kg block is initially at rest on a rough, horizontal surface. A horizontal force of 75N is required to set the block in motion. After it is in motion, a horizontal force of 60N is required to keep it in motion. A. Calculate the coefficient of static friction B. Calculate the coefficent of kinetic friction C. If the or
Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the test is an impact shock test, in which the box must survive being thrown at high speeds against a barrier. A 41-kg box is thro
Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 5.0-kg projectile from rest to a speed of 4.0 x 10^3 m/s^2. The net force accelerating the projectile is 4.9 x 10^5 N. How much time is required for the projectile to come up to sp
See the attached file. A 5.06 kg block located on a horizontal floor is pulled by a cord that exerts a force F = 13.9 N at an angle theta = 18.0° above the horizontal, as shown in the figure. The coefficient of kinetic friction between the block and the floor is 0.06. What is the speed of the block 3.5 s after it starts mov
A 17.2 kg box is released on a 38.1 degree incline and accelerates down the incline at 0.269 m/s^2. Find the friction force impeding its motion, and the coefficient of friction.
SEE ATTACHMENT #1 for a diagram showing parameters. A block of frictionless ice starts from rest and slides distance x= 12 meters down a roof which is at angle b= 37 degrees. Leaving the roof at a point 22 meters above ground, it flies through the air and strikes the ground distance H from the building. Find distance H.
SEE ATTACHMENT #1 for a diagram showing parameters. A block slides down a plane at angle b= 25 degrees with constant speed. If given initial speed Vo= 5.4 m/sec up the plane, it slides up distance x to a stop. The coefficient of friction between block and plane is f, not zero. PART a. If given Vo up this plane, use Newton'
The mass of a fist during a particular karate blow is measured to be about 3,500m/s squared. If the mass of the fist was approximately 0.7kg, what was the maximum force?
A stone of density 5g/cm^3 completely immersed in sea water is allowed to sink from rest. Calculate the depth to which the stone would sink in two seconds. Neglect effect of friction. Relative density of sea water = 1.025 and g = 980cm/s^2