Determine the average power supplied by the child

Assignment Help Physics

Reference no: EM13278055

A playground merry-go-round has a radius of 4.20m and a moment of inertia of 255kg m2 and turns with negligible friction about a vertical axle through its center.

A) A child applies a 25.0N force tangentially to the edge of the merry-go-round for 18.0s . If the merry-go-round is initially at rest, what is its angular velocity after this 18.0s interval?

B) How much work did the child do on the merry-go-round?

C) What is the average power supplied by the child?

Reference no: EM13278055

Questions Cloud

Impact on competency : Compare the pros and cons of continuing nursing education related to the - Impact on competency.

Compute the net downward force on the tanks flat bottom : You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, Find the net downward force on the tank's flat bottom, of area 2.50m^2 , exerted by the water and air inside the tank and the air outside the tank

How many 7475 4-bit latches are needed for a storage array : How many 7475 4-bit latches are needed for a storage array containing eight rows of 32 bits. What types of decoders and/or selectors are needed to read/write any group of 16 bits.

How many grams of this acid will be required to titrate : How many grams of this acid will be required to titrate 45.0 mL of 0.18 M NaOH solution? H2C2O4 + 2NaOH > 2 Na^+ + C2O4^-2 + 2 H2O

Determine the average power supplied by the child : A playground merry-go-round has a radius of 4.20m and a moment of inertia of 255kg m2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child

Find what is the voltage gain of the first stage : A BJT differnetial amplifier, biased to have re = 100 Ω and utilizing two 100 Ω emitter resistors and 5 kΩ loads, drives a second differential stage biased to have re = 50 Ω. All BJTs have β = 100. What is the voltage gain of the first stage

Determine the speed of the water in the pipe : Water flowing through a 2.0cm -diameter pipe can fill a 500L bathtub in 4.9min. What is the speed of the water in the pipe

Calculate the effect on gearing : Calculate the earnings per share next year, with each financing method and calculate the effect on gearing as at the end of next year with each financing method.

Find what would predict to be the minimum entropy : Gaussian random variable W is known to have P[W>4] = 1/2. Based on this information, (a) sketch its possible PDF. (b) Now also assume that Var[W] is very small. Refine your sketch in the first part taking into account this new information.

User Account

All Pages