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A) There is a 1.5 m long rope attached at one end to the ceiling of the room. The mass of this rope is negligible and flexible is not. A small object with a mass of 0.75 kg is hung on the free end of this rope. This object will make a 30 ° angle with the vertical. It makes a circular motion with a speed of 25 rad / s.
A1) What is the rotational kinetic energy of this object?
A2) What will be the rotational kinetic energy of the object if the angle is 60 °?
B) A thick stick of length L = 2.0 m is denser at one end than the other and density to the dense endIt is given by λ = (0,42 kg/m) - (0,15 kg/m2 ).x depending on x, which indicates the distance from. Passing through the heavy end of the stick and around the axis perpendicular to it , It rotates with a period of T = 0.30 s. Find the rotational kinetic energy of the stick.
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.25m/s.
A (perfect) transformer has 20 V and 2 A in its primary coil, 200 turns in its primary circuit, and 20 in its second. How much power is in the secondary circuit
q1. a violin string that is 45.5 cm long has a fundamental frequency of 490 hz.what is the speed of the waves on this
A candle is placed 16.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 7.5 cm farther away from the mirror. Find out the focal length of the convex mirror.
The amplitude of a driven harmonic oscillator reaches a value of 25.0 F0/m at a resonant frequency of 400 Hz . What is the Q value of this system?
A solid object is made of two materials, one material having density of 2 000 kg/m3 and the other having density of 6 000 kg/m3. what is its average density
An elevator is moving upward at 1.07 m/s when it experiences an acceleration 0.30 m/s2 downward, over a distance of 0.71 m. What will its final velocity be
In a nuclear reactor, a neutron moving at speed v in the positive x-direction strikes a deuteron, which is at rest. The neutron is deflected by 90.0A?° and moves off with speed Vi / √3 in the positive y-direction. Find the x- and y-components of th..
a) Use conservative of energy to find the car's speed at the top of the loop and at the bottom of the loop. b) what is the centripetal acceleration ar=V^2/r at the top of the loop and bottom of the loop
The fastest recorded pitch in Major League Baseball was thrown by Nolan Ryan in 1974. Compute how fast was Ryan's pitch
A bullet of mass 7.7 g is fired into aninitially stationary block and comes to rest in the block. The block, of mass 1.21 kg, is subject to nohorizontal external forces during the collision with the bullet.After the collision, the block is observe..
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
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