Match the statement on the right that best describes the term on the left. fulcrum moments second-order levers first-order levers third-order levers second moment of inertia scaling analyses A. turning forces are the products of the forces multiplied by the lengths of the lever arms B. both forces are applied to the same side of the fulcrum, in-force at end of lever farthest from the fulcrum and out-force in between those two points C. contribution of each particle of material in each position of the structure to the resistance to bending. D. study of the structural and functional consequences of changes in size among otherwise similar organisms E. levers rotating or pivoting at this fixed point F. both forces are applied to the same side of the fulcrum, in-force aplied closer to fulcrum than out-force G. in-force applied on one side of the fulcrum and the out-force on the other side
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Physics, 22.06.2019 19:30, paulstanley972
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
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Physics, 22.06.2019 22:30, nickocasamplonp6mlob
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
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