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Get college assignment help at uniessay writers a wooden rod of negligible mass and length 80 cm is pivoted about

explores the concepts that are important in this problem. Pendulum A is a physical pendulum made from a thin, rigid, and uniform rod whose length is d. One end of this rod is attached to the ceiling by a frictionless hinge, so the rod is free to swing back and forth. Pendulum B is a simple pendulum whose length is also d. Obtain the ratio TA/TB of their periods for small-angle oscillations.

wo blocks on a frictionless horizontal surface are connected by a light string where m1-10 Kg. and m2-20 Kg. A force of 50 N.is applied to the 20 Kg. block. (a). Determine the acceleration of each block and the tension in the string? (b). Repeat the problem, adding a coefficient of kinetic friction between each block and the surface of 0.10.

A 0.125 kg baseball is dropped from rest. If the magnitude of the baseball’s momentum is 0.790kg*m/s just before it lands on the ground, from what height was it dropped? .

A 5.1 kg box slides a 10.5 m distance on ice. If the coefficient of kinetic friction is 0.207, what is the work done by the friction force?

A 345 kg mass is supported on a wire attached to a 15 m long steel bar that is pivoted at a vertical wall and supported by a cable. the mass of the bar is 69 kg. (take right and up to be positive) with the cable attached to the bar 5.0m from the lower end as shown, find the tension in the cable. find the components of the force exerted by the wall on the steel bar

The mean distance between earth and the sun is 1.50 x 1011 m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, determine the total power radiated by the sun.

A projectile is shot from the edge of a cliff 205 m above ground level with an initial speed of vo=135 m/s at an angle of 35.0° with the horizontal, as shown in the figure. (a) Determine the time taken by the projectile to hit point P at ground level. s (b) Determine the distance X of of point P from the base of the vertical cliff. km (c) At the instant just before the projectile hits point P, find the horizontal and the vertical components of its velocity. (Assume the positive directions are upward and to the right.) m/s (horizontal) m/s (vertical) (d) At the instant just before the projectile hits point P, what is the magnitude of the velocity? m/s (e) At the instant just before the projectile hits point P, what is the angle made by the velocity vector with the horizontal? ° below the horizontal (f) Find the maximum height above the cliff top reached by the projectile. m

Lonnie pitches a baseball of mass .2 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Lonnie with a return speed of 60 m/s. If the bat is in contact with the ball for .050 s, what is the impulse experienced by the ball

A novice skier, starting from rest, slides down a frictionless 31.0 incline whose vertical height is 215 m . How fast is she going when she reaches the bottom

Get college assignment help at uniessay writers an 8 meter, 200 newton uniform ladder rests against a smooth wall. the coefficient of static friction is .6 and the ladder makes a 50 degree angle with the ground. how far up the ladder can an 800 newton person climb before starts to slip

A space station, in the form of a wheel 132 m in diameter, rotates to provide an “artificial gravity” of 3.10 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel’s rotation in revolutions per minute that will produce this effect.

If a 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power company charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days? Show your work.

the speed of a cyclist reduces uniformly from 2.5 m/s to 1.0 m/s in 12 s. (a) calculate the deceleration of the cyclist. (b) calculate the distance travelled by the cyclist in this time.

A rectangular block of ice 7 m on each side and 0.9 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. How high does the top of the ice block float above the water level?

A 11 g bullet is fired into a 12 kg wood block that is at rest on a wood table. The block, with the bullet embedded, slides 5.0 {rm cm} across the table. The coefficient of kinetic friction for wood sliding on wood is 0.20.

The pulley system shown in the figure is used to lift a 58 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 3.3 m/s2.

The 3.4 kg , 37-cm-diameter disk in the figure is spinning at 350 . How much friction force must the brake apply to the rim to bring the disk to a halt in 2.7 ?

bjects of masses m1-4.00kg and m2=9.00kg are connected by a light string that passes over a frictionless pulley. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of theta=40.0 degrees. The objects are released from rest, and m2 slides 1.00m down the incline in 4.00s. Determine (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic friction between m2 and the incline.

The top fuel dragster reached a top speed of 337.58 mph in 4.42 seconds. Assuming uniform acceleration and a mass of 1009 kg, find the rate of acceleration.

A 2-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.What is the block’s speed when it is at a height of 0.25 m above the base of the slide? m/s (b) How far is the spring compressed? m (c) The spring sends the block back to the left. How high does the block rise? m

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November 3, 2019