In Melde's experiment the number of loops on the string changes from 5 to 4 by an addition of 0.018 kg. Wt. Find the initial tension.
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- The upper leg muscle (quadriceps) exerts a force of FQ = 1180 N, which is carried by a tendon over the kneecap (the patella) at the angles shown in the figure below. 55° 75° Find the magnitude in newtons and direction in degrees counter-clockwise from an axis directed to the left of the force exerted by the kneecap on the upper leg bone (the femur). magnitude direction N ° counter-clockwise from an axis directed to the leftno handwritten answers... answer a, b and c...One day, you are driving your car down the highway, and you notice that you are driving well over the speed limit. You apply the brakes of the carapplying a variable stopping force, until the car slows down to a rea sonable speed of 22.4 m/s (50 mph)A computer plots the force versus time for the vehicle and then measures the area under the curve. It is found that the area is - 18.950N . The total breaking time was 5.4 s. Given that the combined mass of you and your car 1sm = 1200 kg how fast were you moving before applying the breaks? What is the average force applied by the road to the car during breaking? (Note: 1Ns=1kg* m/s)
- Please, explain it step-by-step process.A skydiver weighing 65 kg jumps out of a helicopter hovering at a height of 3 kilometers. Assume a cross-sectional area of 0.5 square meters. After thirty seconds of free fall, the skydiver deploys the parachute and the cross-sectional area becomes 40 square meters. Reproduce the model for the skydiver in Excel or VenSim. In VenSim you may have to make At quite small in order not to throw an error. Because you reach terminal velocity relatively quickly your answer should not be particularly sensitive to the value of At you choose. What is the skydiver's terminal velocity without the parachute? meters/second What is the skydiver's terminal velocity with the parachute? meters/second10. a. In investigating an acccident, police find skid marks left by a car as the driver slammed on the brakes and the car skidded to a halt. The skid marks form a straight line 3.9375 m long on a flat road. It was raining and the coefficient of friction was 0.32125. The mass of the car is 1486.75 kg. What is the angle between the friction force and the displacment of the car? Previous submissions: b. Using W = F Ax cos 0, what was the work done by friction? Previous submissions: c. What was the AKE? Previous submissions: d. What was the initial velocity of the car? Take this to be positive.