Homework Answers
A block of mass M = 0.400 kg is attached to a spring that initially rests...
A block of mass M = 0.400 kg is attached to a spring that initially rests on a frictionless, horizontal surface. A moving rifle bullet with mass m = 16.0 g strikes and embeds itself in the block. The impact compresses the spring by 28.0 cm. The spring constant of the spring is k = 455 N/m. What was the initial speed of the bullet?
A toy car of mass 0.620 kg is pressed against a spring. The spring constant is 250 N/m and the sp...
A toy car of mass 0.620 kg is pressed against a spring. The spring constant is 250 N/m and the spring is compressed a distance of 0.031 m. How fast is the cart moving after it's released from the spring? Ignore the effects of friction.
Consider a system of two toy rail cars (i.e.. frictionless masses)- Suppose that car 1 has...
Consider a system of two toy rail cars (i.e.. frictionless masses)- Suppose that car 1 has mass 6 kg and is traveling at 3 m/s toward the other car- Suppose car 2 has mass 3 kg and is moving toward the other car at 9 m/s. There is a bumper on the second rail car that engages at the moment the cars hit and does not let go (it connects the two cars). The bumper acts as a spring with...
A rifle bullet with mass 7.00 g and initial horizontal velocity 290 m/s strikes and embeds...
A rifle bullet with mass 7.00 g and initial horizontal velocity 290 m/s strikes and embeds itself in a block with mass 0.993 kg that rests on a frictionless surface and is attached to one end of an ideal spring. The other end of the spring is attached to the wall. The impact compresses the spring a maximum distance of 14.0 cm . After the impact, the block moves in SHM. Calculate the period of its motion
with good explanation. 2. A6.0 kg disk traveling at 9.0 m/s strikes a 7.0 kg stick...
with good explanation.
2. A6.0 kg disk traveling at 9.0 m/s strikes a 7.0 kg stick of length 5.0 m that is lying flat on nearly frictionless ice as shown in the overhead view in the figure below. The disk strikes at the endpoint of the stick at a distance r 2.5 m from the stick's center. Suppose that the collision is perfectly inelastic so that the disk adheres to the stick at the endpoint at which it strikes. The...
A toy car of mass 0.35 kg travels along a circular banked road, with banking angle...
A toy car of mass 0.35 kg travels along a circular banked road, with banking angle 30°. The circle has radius 0.80 m. Sarah wants to make the car move as fast as possible, but if it goes too fast, it slips off the road. Therefore, Sarah cuts a 0.80- meter piece of string, attaches one end to the car, and attaches the other end to a nail stuck in the center of the circle. Unfortunately, the string is thin...
1) A railroad car of mass 2,000 kg traveling at a velocity v = 10 m/s...
1) A railroad car of mass 2,000 kg traveling at a velocity v = 10 m/s is stopped at the end of the tracks by a spring-damper system, as shown below. If the stiffness of the spring is k= 40 N/mm and the damping constant c 20 N-s/mm, determine (a) the maximum displacement of the car after engaging the springs and damper, (b) the time taken to reach maximum displacement k2 P 0000 k/2
1) A railroad car of mass...
A car, traveling due north, has an initial velocity of 18 m/s accelerates for 9 s...
A car, traveling due north, has an initial velocity of 18 m/s accelerates for 9 s for a distance of 180 m. What is the velocity of the car after the acceleration? (5) A remote controlled car is moving through a parking lot described by the position function r(t) = [2.5 m - (0.015 m/s^2) t^2] i - [0.6 m - (0.1 m/s) t + (0.032 m/s2) t^2] j. What is the speed of the toy car at t =...
2. Mass mi -10.0 kg is initially held against the spring of spring constant k-100 N/m....
2. Mass mi -10.0 kg is initially held against the spring of spring constant k-100 N/m. The spring is compressed a distance x 0.45 m. When released, m is fired towards a block of mass m2-4.4 kg initially at rest at the edge of a horizontal, frictionless table of height h-0.75 m. A ramp is placed at the end of the table. The ramp has a coefficient of kinetic friction μ.-0.25 and is a distance d-1.06 m long. The blocks...
A 0.400 kg hammer is moving horizontally at 7.50 m/s when it strikes a nail and...
A 0.400 kg hammer is moving horizontally at 7.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. (a) Calculate the duration of the impact. (b) What was the average force exerted on the nail? Additional Materials Reading 12. -12 points OSColPhys1 8.P.002.WA. Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.53 kg. Cart 2...
Consider a system of two toy rail cars (i.e.. frictionless masses)- Suppose that car 1 has mass 6 kg and is traveling at 3 m/s toward the other car- Suppose car 2 has mass 3 kg and is moving toward the other car at 9 m/s. There is a bumper on the second rail car that engages at the moment the cars hit and does not let go (it connects the two cars). The bumper acts as a spring with...
with good explanation.
2. A6.0 kg disk traveling at 9.0 m/s strikes a 7.0 kg stick of length 5.0 m that is lying flat on nearly frictionless ice as shown in the overhead view in the figure below. The disk strikes at the endpoint of the stick at a distance r 2.5 m from the stick's center. Suppose that the collision is perfectly inelastic so that the disk adheres to the stick at the endpoint at which it strikes. The...
A toy car of mass 0.35 kg travels along a circular banked road, with banking angle 30°. The circle has radius 0.80 m. Sarah wants to make the car move as fast as possible, but if it goes too fast, it slips off the road. Therefore, Sarah cuts a 0.80- meter piece of string, attaches one end to the car, and attaches the other end to a nail stuck in the center of the circle. Unfortunately, the string is thin...
1) A railroad car of mass 2,000 kg traveling at a velocity v = 10 m/s is stopped at the end of the tracks by a spring-damper system, as shown below. If the stiffness of the spring is k= 40 N/mm and the damping constant c 20 N-s/mm, determine (a) the maximum displacement of the car after engaging the springs and damper, (b) the time taken to reach maximum displacement k2 P 0000 k/2
1) A railroad car of mass...
A car, traveling due north, has an initial velocity of 18 m/s accelerates for 9 s for a distance of 180 m. What is the velocity of the car after the acceleration? (5) A remote controlled car is moving through a parking lot described by the position function r(t) = [2.5 m - (0.015 m/s^2) t^2] i - [0.6 m - (0.1 m/s) t + (0.032 m/s2) t^2] j. What is the speed of the toy car at t =...
2. Mass mi -10.0 kg is initially held against the spring of spring constant k-100 N/m. The spring is compressed a distance x 0.45 m. When released, m is fired towards a block of mass m2-4.4 kg initially at rest at the edge of a horizontal, frictionless table of height h-0.75 m. A ramp is placed at the end of the table. The ramp has a coefficient of kinetic friction μ.-0.25 and is a distance d-1.06 m long. The blocks...
A 0.400 kg hammer is moving horizontally at 7.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. (a) Calculate the duration of the impact. (b) What was the average force exerted on the nail? Additional Materials Reading 12. -12 points OSColPhys1 8.P.002.WA. Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.53 kg. Cart 2...
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