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- The ladder of the fire truck rotates around the z axis with an angular velocity w₁ = 0.10 rad/s, which is increasing at 0.78 rad/s². At the same instant it is rotating upward at a constant rate w₂ = 0.65 rad/s. (Figure 1) Figure @n 40 ft АНННННННHaddddin 0₂ 30° 1 of 1 Part A Determine the velocity of point A located at the top of the ladder at this instant. Enter the components of the velocity in feet per second to three significant figures separated by commas. V Ax, VAy, Az = -3.46,-13.0,22.5 ft/s Submit All attempts used; correct answer displayed Part B Previous Answers Determine the acceleration of point A located at the top of the ladder at this instant. Enter the components of the acceleration in feet per second squared to three significant figures separated by commas. a Ax, a Ay, a Az = Submit Provide Feedback 17 ΑΣΦ - 15.6, -27.0, – 31.2 ↓↑ vec Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining ? ft/s² Next >A playground merry-go-round has a radius of 4.30 mm and a moment of inertia of 243 kg⋅m2kg⋅m2 and turns with negligible friction about a vertical axle through its center. Part A A child applies a 25.0 NN force tangentially to the edge of the merry-go-round for 18.0 ss . If the merry-go-round is initially at rest, what is its angular velocity after this 18.0 ss interval? Express your answer in radians per second. Part B How much work did the child do on the merry-go-round? Express your answer in joules. Part C What is the average power supplied by the child? Express your asnwer in watts.Please don't provide handwritten solution ....
- As you drive down the road at 18 m/s, you press on the gas pedal and speed up with a uniform acceleration of 1.22 m/s² for 0.60 s. You may want to review (Page 312). If the tires on your car have a radius of 33 cm, what is their angular displacement during this period of acceleration? Express your answer using two significant figures. Δθ = Templates Symbols undo redo reset keyboard shortcuts help radA 1.8 kg bicycle tire with a radius of 31 cm rotates with an angular speed of 155 rpm. Part A Find the angular momentum of the tire, assuming it can be modeled as a hoop. Express your answer using two significant figures. L = ΠΙ ΑΣΦ www ? kg m²/s .A string is wrapped several times around the rim of a small hoop with radius 8.00 cm and mass 0.180 kg. The free end of the string is held in place and the hoop is released from rest (the figure (Figure 1)). The hoop has descended 85.0 cm. Part A Calculate the angular speed of the rotating hoop. Express your answer in radians per second. ΑΣφ ? W = rad/s Submit Request Answer Figure 1 of 1 > Part B Calculate the speed of its center. Express your answer in meters per second. να ΑΣφ ? V = m/s 0.0800 m Submit Request Answer
- Nilo.p A baseball bat is swung with an angular velocity of 500°/s and has a radius of 1.2m. What is the linear velocity of the baseball bat?A 0.74-m-diameter solid sphere can be rotated about an axis through its center by a torque of 12.8 m * N which accelerates it uniformly from rest through a total of 160 revolutions in 16.0 s. Part A What is the mass of the sphere? Express your answer to two significant figures and include the appropriate units. M = O μA Submit Value Units Request Answer ?Please answer C, D, E The angular position of a rod varies as 20.7t2 radians from time t = 0. The rod has two beads on it as shown in the following figure, one at r1 = 13 cm from the rotation axis and the other at r2 = 32 cm from the rotation axis. (Note: figure may not be drawn to scale.) (a) What is the instantaneous angular velocity (in rad/s) of the rod at t = 3 s? (Indicate the direction with the sign of your answer. Round your answer to at least one decimal place.) 1.24.2 rad/s, ANSWERED (b) What is the angular acceleration (in rad/s2) of the rod at t = 3 s? (Indicate the direction with the sign of your answer.) 41.4 rad/s2, ANSWERED (c) What are the tangential speeds of the beads (in m/s) at t = 3 s? vt, 1 =16.146 m/s, ANSWERED vt, 2 =____m/s (d)What are the tangential accelerations of the beads at t = 3 s? (Enter the magnitudes in m/s2.) at, 1 = ______ m/s2 at, 2 = ______ m/s2 (e) What are the centripetal accelerations of the beads at t = 3 s? (Enter the magnitudes…
- The angular speed of a propeller on a boat increases with constant acceleration from 14 rad/srad/s to 35 rad/srad/s in 2.6 revolutions. Part A What is the angular acceleration of the propeller? Express your answer in radians per second squared.Cons A constant torgue of 25 m - N is applied to the rim of a 15-kg uniform disk of radius 0.30 m. Part A What is the angular speed of the disk about an axis through its center after it rotates 2.0 revolutions from rest? Express your answer using two significant figures. Ην ΑΣφ rad/s Previous Answers Request Answer Submit X Incorrect; Try Again; 5 attempts remainingHELP WITH THIS PLEASE, DO NOT DO b ONLY THE OTHER