大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
Two 1.20 kg balls are attached to the ends of a thin rod of length 40.0 cm and negligible mass. The rod is free to rotate in a vertical plane without friction about a horizontal axis through its center. With the rod initially horizontal (as shown), a 80.0 g wad of wet putty drops onto one of the balls, hitting with a speed of 5.00 m/s and then sticking to it
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
這個問題基本就是用 conservation of angular momentum來做就可以了
In the figure below, a 30 kg child stands on the edge of a stationary merry-go-round of radius 2.1 m. The rotational inertia of the merry-go-round about its rotation axis is 150 kg∙m^2. The child catches a ball of mass 1.1 kg thrown by a friend. Just before the ball is caught, it has a horizontal velocity v with arrow of magnitude 14 m/s, at angle ∅=37° with a line tangent to the outer edge of the merry-go-round, as shown. What is the angular speed of the merry-go-round just after the ball is caught?
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
The uniform solid block in the figure below has mass 0.195 kg and edge lengths a = 4.3 cm, b = 7.8 cm, and c = 1.5 cm. Calculate its rotational inertia about an axis through one corner and perpendicular to the large faces.
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
In the figure below, two particles, each with mass m = 0.89 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.5 cm and mass M = 1.3 kg. The combination rotates around the rotation axis with angular speed ω = 0.32 rad/s.
(a)Measured about O, what is the combination’s rotational inertia?
(b)What is the combination’s kinetic energy?
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
Some European trucks run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 200π rad/s. One such flywheel is a solid, uniform cylinder with a mass of 460 kg and a radius of 1.5 m.
(a)What is the kinetic energy of the flywheel after charging
(b)If the truck operates with an average power requirement of 6.0 kW, for how many minutes can it operate between chargings?
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
Calculate the rotational inertia of a meter stick, with mass 0.62 kg, about an axis perpendicular to the stick and located at the 21 cm mark. (Treat the stick as a thin rod.)
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
Figure (a) shows a disk that can rotate about an axis at a radial distance h from the center of the disk. Figure (b) gives the rotational inertia I of the disk about the axis as a function of that distance h, from the center out to the edge of the disk. The scale on the I axis is set by IA = 0.010 kg · m2 and IB = 0.910 kg · m2. What is the mass of the disk?
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
A car starts from rest and moves around a circular track of radius 46.0 m. Its speed increases at the constant rate of 0.400 m/s2.
(a)What is the magnitude of its net linear acceleration 15.0 s later?
(b)What angle does this net acceleration vector make with the car’s velocity at this time?
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。
In the figure below, wheel A of radius rA = 15 cm is coupled by belt B to wheel C of radius rC = 20 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find the time needed for wheel C to reach an angular speed of 110 rev/min, assuming the belt does not slip.
大家好，歡迎來到Yogi霸霸解題給你看，今天我要講解的是AP Physics C裡Rotation的作業。