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You need to know the height of a tower, but darkness obscures the ceiling. You note that a pendulum extending from the ceiling almost touches the floor.
Which of these reach the bottom first? Give reason. Find the speed of the disk when it reaches the bottom of the incline.
A 587 kg roller coaster car (includes mass of occupants) are passing through a vertical loop. The speed of the car at the top of the loop is 15.4 m/s.
A pulley has an initial angular speed of 12.5 rad/s and a constant angular acceleration of 3.41 rad/s squared. Through what angle does the pulley turn in 5.26 s
What is the acceleration of a 20kg sled as it is pulled across the ground with an applied force of 50N?
The magnification factor of an undamped spring mass system is infinite when the frequency ratio has a value of 1.1.
The basketball is thrown from the level of the teachers head or again 2.256 m at a velocity of 18 m/s, at an angle of 62 degrees from the horizontal.
Determine the capacitance if the plates are separated by Air.
A rocket accelerates upward from the ground at 25m.s-2 for 2.5s at an angle of 80o to the horizontal.
Location A is 4 m to the LEFT of a point charge of 0.3 μC. Location B lies on the same line and is to the RIGHT of the charge.
At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 3.20m/s^2.
Calculate the downward force (vector F ) exerted by the hammer head on the nail while the hammer head is in contact with the nail and moving downward.
A motorist traveling with a constant velocity of 15 m/s passes a school-crossing corner.
What minimum coefficeint of static friction is required? Is the answer reasonable? In other words, is she likely to stay on the merry go round?
A 240 N sphere, 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 37 degrees with the horizontal.
A pneumatic high-speed cutter with a 7.50 cm diameter cutting disc is advertised to have a rotation rate of between 5,000 and 18,000 rev/min.
During the acceleration, the hoisting cable applies a force of 9410 N. What does the scale read during the acceleration?
The mutual inductance between the two circuits shown is 20 nH. It may be assumed that (R1 + R*L1) >> w*L1 and that (R2 + RL2) >> w*L2.
A unit-step function u(t) can be considered a causal constant source (e.g. a battery in a circuit if the units of u(t) is volts).
The claim that the acceleration of the falling mass is the same as the tangential acceleration of a point at the lever arm distance from the axis.
The leg and cast in Figure weigh 270 N, with the center of mass as indicated by the blue arrow in the diagram.
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 3.0 rev/s in 7.0 s.
What is the total mechanical energy of this simple harmonic oscillator?What is the maximum speed of the particle?
An initially uncharged 10-mF capacitor is charged by a 10-V battery through a resistance R. The capacitor reaches a potential difference of 4 V in a period
The plane is pointed vertically downward at Mach 3 and will be pulled from the dive in a circular manuver (befoe crashing).