Mechanics | Relativity Answers

A thin rod of lengh L lies on the +x-axis with its left end at the origin. A string pulls on the rod with a force f directed toward P point a distance is above the rod should you attach the string to det the greatest torque about the origin if point P is above the right end of the rod.

Calculate the moment of inertia of each of the following uniform objects about the axes indicated. A thin 2.50 kg rod lenght 75.0 cm about an axis perpendicular to it and passing a.)(i) through one end (ii) through its center, and (iii) about an axis parallel to the rod and passing through it. b.) A 3.00 kg sphere is (i) solid and (ii) A thin walled hollow shell c.) An 8.00 kg cylinder of lenght 19.5 cm cylinder if the cylinder is (i) thin-walled and hollow and (i) solid.

A fan blade is initially rotating an angular speed of 4.6 rpm. It slows down and eventually comes to rest in a time of 32 seconds after turning through a total of 8.8 revolution. Find a.) The angular speed in rad/s. b.) The average angular velocity ang c.) The average angular acceleration.

A rocket rises vertically with acceleration of 3.2m/s^2. It runs out of fuel at 750 m. It’s acceleration from here is gravity.
1- what is the velocity of the rocket when it runs out of fuel.
2- how long does it take to reach 750 m.
3- what is the highest altitude the rocket reaches.
4- what velocity does it strike earth.
5- how long is it in the air

In traffic knowledge, one speaks of reaction distance, braking distance and stopping distance. From the driver noticing the danger until they react, it takes a certain amount of reaction time. The reaction distance is the distance the car travels during the reaction time. The braking distance is the distance the car moves during braking. The stop distance is the sum of the reaction distance and the brake distance. Calculate the stopping distance for a motorist who has a speed of 108 km / h. The reaction time is assumed to be 0.84 s and the mean value of the acceleration during braking is 5.1 m / s2. Draw three diagrams for the whole process.
One with distance time-graph, one with speed time-graph and one with acceleration time-graph

A scouting party has become trapped in a forest away from their field camp. Based on their explorations, the scouts know that they are 2 km from the field camp in a direction 30˚ west of north. They also know that field camp is located 3 km from the base camp in a direction 45˚ north of east. They wish to radio their position to the base camp so that food and supplies can be dropped by air as close to their position as possible. How can they pinpoint their location relative to the base camp?

The frequency of the transverse waves with an amplitude of 0.02 m moving along a + X axis with a speed of 10 m / s on a string is 5 Hz. Find the wavelength (λ) of the transverse waves traveling on this string and write the displacement equation of these waves. (Take = 3)

Which instrument would you recommend as the best and most appropriate and to a student in the measurement of the diameter of a metal rod.

Which instrument would you recommend as the best and most appropriate and to a student in the measurement of the diameter of a metal rod.

A car covers first half of the distance between two places at a speed of 80km/hr and
the second half at 60km/hr. What is the average speed of the car?