21 - Which of the following is not a part of single bladed wind turbine? a. Counter weight b. Hub c. Long blade d. Bearings
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21 -
Which of the following is not a part of single bladed wind turbine?
Counter weight
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Solved in 2 steps
- A mechanic turns down a bolt and develops 85 N·m of torque with a wrench that’s 20 cm in length. How much force does the mechanic turn the bolt with? A) 1,700 N B) 425 N C) 17 N D) 4.25 N E) none is correct13 Which is INCORRECT among the following statements? The counterpart of torque in translational motion is force. The counterpart of work in translational motion is mass. Dynamics for rotational motion is analogous to translational dynamics None of the above19 - The propeller of an electric generator rotates at an angular speed of 3600 rpm. Calculate the linear velocity of a point 52 cm from the axis of rotation. A) 165 m/s B) 137 m/s C) 196 m/s D) 271 m/s E) 142 m/s
- 4. A uniform solid ball of mass m and radius R rolls without slipping down a plane inclined at an angle 0.Use free body diagram to indicate all the forces acting on the body and a) Find the acceleration of the center of mass. b) Find the velocity of the center of mass b) Change the ball with another rolling body and compare the changes in acceleration and velocity5-1. Calculate the torque about the z-axis pointing out of the page at the origin in the following - figure given that F₁ =3 N, F₂ = 9 N, F3=8 N, F₁=2 N. Hint: Use the sign convention for torques, counter-clockwise rotation corresponds to a torque in the positive z-direction and clockwise rotation corresponds to a torque in the negative z-direction. Which forces produce clockwise rotations and which forces produce counter-clockwise rotations? While using the formula for cross-product A x B= ABsine, remember that is the angle between the tails of the vectors A and B. To determine 0 rearrange the vectors so that their tails coincide. Nm k net = F₂ 30° F3 YA 2 m O 3 m 2 m F4 20° F₁