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Q1. A spider of mass m is sitting in a perfectly symmetric web (in a vertical plane with 45 angles between the web lines), where Ti's denote the tensions along the lines that are connected to the spider at the center with i = 1, 2, 3, 4, 5, 6, 7, 8. The tension is all positive. How is the tension T3 related to T2, T8, and T7?
Q2. Suppose a 65 kg boy and a 42 kg girl uses a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
The lander is 8.2 meters above the surface and has the downward speed of 0.89 m/s while the engine is cut off. What is the speed of the lander just before it touches the surface.
A dynamite blast at a quarry launches a rock straight upward, and later it is rising at a rate of 15m/s. Assuming air resistance has no effect on the rock, calculate the total time the rock is in the air.
What are the d irections of electric field
The drawing shows one horizontal wire with the current going up and one vertical wire with the current going to the right. Point A is dH to the right and dV above the intersection. Point B is dH to the left and dV below the intersection.
The parallel metal plate of a capacitor is seperated by a distance of 0.5cm and is connected to a 90v battery. Find an electric field between them and the surface charge density.
From what height will you have to drop the rock on Earth so that the fall-time on both planets is the same.
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
What is the strength of an electric field at a distance r from the center, inside the sphere. Assume the sling thrower could gradually increase the speed of the stone.
How long did it take the apple to hit Newton after falling off? Draw a graph of velocity vs
Find out the gravitational potential energy
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
Next you eliminate the 11 kg mass, place the rod horizontally, and strike one end with a hammer. How much time t would elapse before a microphone at the other end of the bar will detect a disturbance.
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