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A merrygoround 5 meters in diameter accelerates uniformly from 1 rpm to 30 rpm in 10 seconds.
a. What is the angular acceleration of the wheel?
b. How far will a point on the edge of the merrygoround travel in this time?
c. Assuming angular acceleration is constant, how much additional time does it take the merrygoround to reach 60 rpm?
d. The moment of inertia of the merrygoround is 1.5 x 10^7 kg m^2, calculate the torque required to accelerate the merrygoround.
e. What is the kinetic energy of the merrygoround while spinning at 60 rpm.
Two large spheres with the same diameter are mounted on vertical axles in a science museum. Both are coated in a thin layer of white plastic, and although they appear identical, one is actually a solid wooden sphere, while the other is a hollow me..
Water at 2 kg/s is the working fluid in the power cycle shown below. Saturated liquid at 10 kPa enters the pump, What is the overall efficiency of the entire cycle
What is the speed of each fragment just after the explosion? What is the distance between the points on the ground where they land? Assume that the ground is level and air resistance can be ignored.
A position-time graph for an object moving in the - dir'n and accelerating from a low velocity to a high velocity is shown below. If the object is moving in the - dir'n, then the slope of a p-t graph would be -. If the object is changing velocity fro..
a 0.120-kg block is suspended from a spring. when a small pebble of mass 30 g is placed on the block the spring
A lamp (R=150), an electric heater (R=23), and a fan (R=50) are connected in parallel across a123V line. calculate the power is expended in the heater
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What are the units of electric potential? How is electric potential measured? Please keep solution simple and short and please no copy and paste
A 27 pound meteorite struck a car, leaving adent 10 cm deep in the trunk. Ifthe meteorite struck the car with a speed of 250 m/s, what was the magnitude of its deceleration
An oar used to row a boat has the handle 55 centimeters from the fulcrum and the blade 220 centimeters. Find the mechanical advantage of the oar
The cylindrical beam of a 80.0 mW laser is 0.80 cm in diameter. What is the rms value of the electric field
A freight car with a mass of 10 metric tons is rolling at 108 km/h along a level track when it collides with another freight car, what is the mass of the second car
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