The suspension system on a bicycle is likely to use which of the following mechanical devices? A. A chain B. A pulley C. A gear D. A spring E. None of the above

A supertanker uses a windlass (a type of winch) like the one shown in the figure below to hoist its 16,000-kg anchor. Determine the force that must be exerted on the outside wheel to lift the anchor at constant speed, neglecting friction and assuming the anchor is out of the water. ro = 0.45 m r; = 1.5 m

2. A strain gauge (see picture shown below from Omega) is a resistance element that is used to measure the fractional elongation experienced by a material. If it is attached to a beam that undergoes a deflection due to an impact, we can use the gauge to measure the deflection or monitor the frequency with which the beam vibrates. R1 SG1 wwwwww Lumin Assume we attach two strain gauges (SG1 and SG2) on opposite sides of the beam as shown above. If the beam deflects downward, SG1 elongates (so its resistance increases) while SG2 compresses (so its resistance decreases). Let's hook up the elements into a Wheatstone bridge as shown below. If R1=R2=100 92, and the nominal values of SG1 and SG2 when no strain is present are 100 as well, what is the value of Vout when the beam is deflected enough to cause SG1 to increase to 100.1 № and SG2 to decrease to 99.9 N? The voltage at the top of the bridge (10V in this case) is called the "excitation voltage". 10V Vout R2 Wall SG2 SG 1 SG 2 Beam

Two identical strings making an angle of 0 = 30.3° with respect to the vertical support a block of mass m = 10.2 kg (see the figure below). What is the tension in each of the strings? (Enter your answer in N.) %3D HINT ele 77m