2. A pendulum bob is initially released when A is exactly to the right of point O and the cable is taut. It swings clockwise and is now at the position where its cable makes an angle of 12.50 degrees with the horizontal. At this position, the tension in the cord is 3 times the weight of the bob. The mass of the pendulum bob is 0.400 kg. 12.5° 1 т A Which of the following gives the direction of the acceleration of the pendulum bob A at the instant shown in the figure? 4 6.83 degrees y 70.7 degrees y 6.83 degrees 4 70.7 degrees sliding friction is 0.1

6. A circular trampoline has 40 springs around the outer edge, each with a constant of 100NM. If a child of mass 50kg depresses the tramopline such that each spring is at an angle of 20º below horizontal, what is the displacement of each spring? g=10ms2

In the figure, the system is released from rest. The tension in the string connecting the two masses is T. If m1 = 0.150 kg and m2 = 0.050 kg, what is the tension in the string? a T m₁ T O 0.25 N O 0.49 N O 0.37N O 0.61N m₂ m₂g a

a 1.12-m string pendulum has a bob of mass 0.200 kg. a) What is the magnitude of the tension in the string when the pendulum is at rest? b) What is the magnitude of the tension at the bottom of the swing if the pendulum is moving at 1.20 m/s?

Instead of moving back and forth, a conical pendulum moves in a circle at constant speed as its string traces cut a cone (see figure below). One such pendulum is constructed with a string of length = 12.5 cm and bob of mass 0.235 kg. The string makes an ange 88.72" with the vertical. (4) What is the said alation of the hob x magnitude Your response differs from the correct answer by more than 10%. Double check your calculations. m/s² direction mward ✔✔✔ Bob (b) What are the horizontal and vertical components of the tension force exerted by the string on the bob? (Assume radially inward to be the positive x axis and vertically upward to be the positive yaxis. Express your answer in vector form.) x N

A box of mass M = 50 kg rests on a rough (is) horizontal surface. When a force F = 100 N is acted on the box as shown in the figure below, the box becomes on the verge of slipping (jY hig dc jinall ). The coefficient of static friction of the rough surface is: F А. 0.92 B. 0.75 400 C. 0.14 M D. 0.57 E. 0.34

How would I find magnitude of acceleration

2. The 12-kg rod AB is pin connected at A and subjected to a couple moment of M = 15 N-m. If the rod is released from rest when the spring is unstretched at 0 = 30°, determine the rod's angular velocity at the instant 0 = 60°. As the rod rotates, the spring always remains horizontal, because of the roller support at C. k = 40 N/m B 0.75 m M = 15 N- m,

ore ge.co TED CCU... ect n ol.sona- om bject Pool epartment... 24,919 3 9. A mass m₁ = 19.0 kg is connected by a light string that passes over a pulley of mass M = 14.0 kg to a mass m₂ = 9.50 kg sliding on an inclined frictionless surface that makes an angle of 28° with the horizontal (see figure). There is no slippage between the string and the pulley. What is the magnitude of the acceleration of the system of masses? (The moment of inertia of the pulley is Mr².) m/s² 20 F3 $ 4 % 5 F5 6 tv ♫ e MacBook Air & 7 44 F7 m₂ 8 m₁ 9 O FO O A ISOIH by mi 04 M quies or rne puffer

1. A 0.50 kg puck rests on a level air table and is connected by a light thread passing through a hole in the table to support a hanging mass of 3.0 kg. A stable orbit is achieved when the puck is sent into a circular path of radius 0.15 m around the hole.a) Neglecting friction at the edge of the hole, calculate the period of revolution of the puck in its orbit. (hint: first do a f.b.d. of the hanging mass to find tension T in thread) b) Suppose that the speed of the puck in its orbit is now doubled, while the radius remains fixed. What central mass will be needed to achieve a stable orbit?  1. A 0.50 kg puck rests on a level air table and is connected by a light thread passing through a hole in the table to support a hanging mass of 3.0 kg. A stable orbit is achieved when the puck is sent into a circular path of radius 0.15 m around the hole.a) Neglecting friction at the edge of the hole, calculate the period of revolution of the puck in its orbit. (hint: first do a f.b.d. of the…