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Q1. A 1.00 kg glider on a horizontal air track is pulled by a string at an angle θ. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg . (a) Show that the speed vx of glider and the speed vy of the hanging object are related by vx = uvy, where u = z(z2-h02)-1/2. (b) The glider is released from rest. Explain that at that instant the acceleration ax of the glider and the acceleration ay of the hanging object are related by ax = uay. (c) Find the tension in the string at the instant the glider is released for h0 = 80cm and θ = 30.0°.
Q2. A 5578 physics student stands on a bathroom scale in an 832 (including the student) elevator that is supported by a cable. As the elevator starts moving, scale reads 431. A) Find the magnitude of acceleration on the elevator? B.) what is the acceleration if = scale reads 601N? C.)What is the tension in = cable in part A? D.)What is the tension in = cable in part D?
50 g ball travelling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.51 ms, what is the average acceleration of the ball throughout this time inter..
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
Ricardo walks 22.0 in a direction 50.0 west of north. Jane walks 20.0 in a direction 30.0 south of west. They after that stop and turn to face each other.
How to find the magnetic field
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
A rotating cylinder about 16 {rm km} long and 6.8 km in diameter is designed to be used as a space colony. With what angular speed should it rotate so that the residents on it will experience the same acceleration due to gravity as on Earth.
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground as he slows down.
An airplane must reach a speed of 172 mi/h to take off. If the runway is 470 m long, what is the minimum value of the acceleration that would allow the airplane to take off productively.
Because the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it should be released above the top of the loop-the-loop height.
An archer puts a 0.54 kg arrow to the bowstring. An average force of 202 N is exerted to draw the string back 1.3 m. suppose that air resistance is negligible.
Write down the expression for net torque
A space traveller whose mass is 104kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no near planetary objects.
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