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A pendulum of length I = 2 in and mass m = 0.2 kg is swinging from the ceiling. The amplitude of the oscillation is θmax = 10 degrees.
1. Compute the total force acting on the bob at the lowest point P of the trajectory Give magnitude and direction.
2. Compute the tangential acceleration of the object at the lowest point P of the trajectory. Hint: use the second law.] Can we say that instantaneously this is a uniform circular motion?
3. If the bob was just hanging from the ceiling without swinging, would the tension in the rope be less than, greater than, or equal to the tension you found in question 2? Why?
A wire 1.50 m long carrying a current of 10.0 A is at right angles to a uniform magnetic field. The force acting on the wire is 0.60 N. What is the strength of the magnetic field?
A speed skater moving across frictionless ice at 8.6 m/s hits a 5.5 m wide patch of rough ice. She slows steadily, What is her acceleration on the rough ice
You push a block with a constant force of magnitude 12.5N for adistance of 10 meters. The block weighs 10 kg, and startsfrom rest. What is its final velocity
A thermodynamic system undergoes a process in which itsinternal energy increases by520 J. what is the energy transferred toor from it by heat
A rescue plane flies horizontally at a constant speed searching for a disabled boat, If it takes the sound 2.10 s to reach the plane, determine the speed of the plane and What is its altitude
Consider a 61.5-cm long lawn mower blade rotating about its center at 3230 rpm. Calculate the linear speed of the tip of the blade
In South Carolina temperature extremes can be quite large; 60 degrees C in the summer to -10 degrees C in the winter. What is the effect on a 10 m section of highway? (alpha concrete = 12 x 10^-6 C)
A pendulum consists of a mass m suspended by a massless springwith unextended length b and spring constant k. What is the period of small oscillations
A rock climber stands on top of a 60 m high cliff hanger a pool of water. He throws two stones vertically downward 1.0 s apart and observes that they cause a single splash. What was the initial speed of the second stone
What is the magnitude of the radial acceleration of the body. What is the tension in the cord.
A 20-kg child swings back and forth on a swing such that her height h in m from the ground as a function of x is described by: h(x) = 0.5 + 0.45x2 for -1.2 m ? x ? 1.2 m, What is the maximum potential energy of the child
Find at what speed must the car be moving, in order for it to have a wavelength such that it might somehow "diffract" after passing through this "single slit"
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