See attached file for diagram. A uniform rod of mass M = 5.18 kg and length L = 1.20 m can pivot freely (i.e., we ignore friction) about a hinge attached to a wall, as seen in the figure attached in a Word doc. The rod is held horizontally and then released. Determine the angular acceleration of the rod at the moment of relea
A disk starts from rest and accelerates at constant angular acceleration to 10 rev/sec in time t. While rotating through the next 60 revolutions, its speed increases to 15 rev/sec. Part a. Find the angular acceleration in rad/sec^2. Part b. Find T, the time required from 10 to 15 rev/sec.
Child stands on frozen pond: Determine the minimum time required for the child to walk to shore without slipping
A child stands on the surface of a frozen pond 12 m from the shore. If the coefficient of static friction between her boots and the ice is 0.05, A. Determine the minimum time required for the child to walk to shore without slipping.
Angular acceleration of a mass attached to a 59.7 cm long string starting from rest and rotated 32 times.
A mass attached to a 59.7 cm long string starts from rest and is rotated 32 times in 68.0 s before reaching a final angular speed. Determine the angular acceleration of the mass, assuming that it is constant.
Q: "The blades in a blender rotate at a rate of 7290 rpm. When the motor is turned off during operation, the blades slow to rest in 3.67 s. What is the angular acceleration as the blades slow down? The initial rotation is in the positive direction." The OTA's solution is attached. We both got an answer of 208 rad/s^2.
Question: The blades in a blender rotate at a rate of 7290 rpm. When the motor is turned off during operation, the blades slow to rest in 3.67 s. What is the angular acceleration as the blades slow down? The initial rotation is in the positive direction.
A 15kg box sits on a table. It is not moving. Please answer the following questions and show your work if possible. The force of gravity is equal to __Newtons. The force of the table against the box is the ___force. The force of the box against the table is equal to ___Newtons.
A cup of coffee is setting on a table in a airplane that is flying at a constant altitude and a constant velocity. The coefficient of the static friction between the cup and the table is 0.30. Suddenly, the plane accelerates, its altitude remaining constant. What is the maximum acceleration that the plane can have without the cu
An airplane has a mass of 3.1 x 10^4 kg and takes off under the influence of a constant net force of 3.7 x 10^4 N. What is the net force that acts on the plane's 78-kg pilot?
A roller coaster car of mass 320 kilograms(including passengers) travels around a horizontal curve of radius 35 meters. Its speed is 16 meters per second. What is the magnitude and direction of the total force exerted on the car by the track?
A 1500kg car drives around a flat curve with a radius of 52m the car has an acceleration of 52m/s^2. What is the maximum force needed so the car will not slip?
1) A car starts from rest with an acceleration of 6 m/sec2. After attaining a speed of 30 m/sec it maintains a constant speed. Find (a) the distance traveled in 10 seconds and (b) average speed during in the first 10 seconds. 2) A projectile is fired from the ground with an unknown speed at an angle fo 30 degrees. Its rang
A pulley with one end connected to a 300 gm block and the other connected to an unknown weight(M) has a negligible friction. The tension in the string is given as 2 nt. Determine: (a) the acceleration of the 300 gm block. (b) the force acting on the 300 gm block. (c) weight of M in Newton's (d) value of the unknown ma
From the attached diagram, determine (a) frictional force (b) acceleration of the system (c) tension in the string (d) net force acting on the 2 dg block. The coefficient of friction is 0.4.
"A runner hopes to complete the 10,000-m run in less than 30.0 minutes. After exactly 27.0 minutes, there are still 1100 m to go. The runner must then accelerate at 0.20 m/s^2 for how many seconds in order to achieve the desired time?" Here's what I've done: So far, the runner has gone 8900 m in 1620 s, which should give h
"A sprinter accelerates from rest to 10.0 m/s in 1.35 seconds. What is her acceleration in (a) m/s^2, and (b) km/h^2?" I got (a) right. Acceleration = 10/1.35 = 7.41 m/s^2. But I somehow screw it up when I go to do the conversion. Here's what I did: 10 m = 0.01 km 1.35 s = 3.75 x 10^-4 hr (1.35 x (1 hr/3600 s) So the s
At what minimum speed must a roller coaster be traveling when upside down at the top of a circle if the passengers are not to fall out? Assume a radius of curvature of 9.27 m.
See attached file for the graph. In the figure below, m1 = 10.7 kg and m2 = 4.15 kg. The coefficient of kinetic friction is 0.271. If the system is set in motion with m2 moving downward, what will be the acceleration of the system? I'm not sure how to factor in the coefficient of kinetic friction. Can you show me how to do
A firefighter, 48.2 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 32.8 degrees above the horizontal. If the speed of the stream as it leaves the hose is 40.1 m/s, at what height will the stream of water strike the building?
See attached drawing in Word file. Please give me a step by step rundown of how to do it? "A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge H = 227 m below. If the plane is traveling horizontally with a speed of 223 km/hr (61.9 m/s), how far in advance of the recipients (horizontal dista
"A fugitive tries to catch a freight train traveling at a constant speed of 5.95 m/s. Just as an empty box car passes him, the fugitive starts from rest and accelerates at 3.84 m/s^2 to his maximum speed of 8.23 m/s. How long does it take him to reach the empty box car?"
"A car accelerates from rest and travels for 4.98 s with a uniform acceleration of +1.50 m/s^2. The driver then applies the brakes, causing a uniform acceleration of -1.99 m/s^2. If the brakes are applied for 3.06s, how fast is the car going at the end of the braking period? And how far has the car gone?"
Hi. Here's my problem: "A tennis ball with a speed of 11.8 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 8.51 m/s. If the ball is in contact with the wall for 0.00175 s, what is the average acceleration of the ball while it is in contact with the
Please help with the following problem. A force F applied to an object of mass m1 produces an acceleration of 3.00m/s^2. The same force applied to a second object of mass m2 produces an acceleration of 1.00m/s^2. (a) What is the value of m1/m2?.........I understand that a2/a1=1/3 --answer (b) If m1 and m2 were combine
A.) A wedge with mass M rests on a frictionless horizontal tabletop. A block with mass m is placed on the wedge. There is no friction between the block and the wedge. The system is released from rest. Calculate: i) the acceleration of the wedge ii) the horizontal and vertical components of the acceleration of the block.
View attachment I would like detail easy to understand answers , and if u need a drawing ( figure ) for the problem email me , i will email you back if i have a drawing. Thank you
SEE ATTACHMENT #1 for a diagram showing parameters. A crate rests on a truck which is traveling at speed V= 26 m/sec down a hill inclined at angle b= 8 degrees. The coefficient of friction between crate and truckbed is f= .50. Find the shortest stopping distance such that the crate does not slide forward.
A man sitting in a cage is connected to a pulley system of three movable and one fixed pulley in the system shown in ATTACHMENT #1. He pulls down on a rope as shown, to raise himself and the cage. The man and cage have a total weight of 639 nt. Ignore friction as negligible. PART a. Find the force he exerts to move upward
SEE ATTACHMENT #1 for a diagram showing parameters. A box whose mass is 5 kg is on a frictionless horizontal surface. A force P is applied to the box in a direction 25 degrees above horizontal. PART a. Find the maximum value of P for which the box stays in contact with the floor. PART b. Find the acceleration when this
SEE ATTACHMENT #1 for a diagram showing known parameters. An antitank gun with initial velocity Vo= 240 m/sec at +10 degrees is located on top of a tower 60 m above ground. A tank is initially at rest, 2200 m from the base of the tower on the level ground. At time t=0, the tank crew sees the gun and begins to accelerate at .9