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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?
At time a grinding wheel has an angular velocity of 21.0. It has a constant angular acceleration of 26.0 until a circuit breaker trips at time = 1.6. From then on, the wheel turns through an angle of 435 as it coasts to a stop at constant angular dec..
The mass of a space shuttle is approximately 2.0x10^6 kg. Throughout lift-off, the net force on the shuttle is 1.0x10^7 newtons directed upward. What is the speed of the shuttle 10 seconds after liftoff.
Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.
Find out the magnitude of the charge on the moving particle. The baby soon learns to bounce with utmost amplitude and minimum effort by bending her knees at what frequency.
How much charge passes during the starter motor
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
When two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard.
Two 53 {rm g} blocks are held 30 {rm cm} above a table. One of them is just touching a 50-long spring. The blocks are released at the same time. The block on the left hits the table at accurately the same instant as the block on the right first comes..
How far will it travel before becoming airborne
A kayaker needs to paddle north across an 85 m wide harbor. The tide is going out, creating a tidal current that flows to the east at 1.7 m/s. The kayaker can paddle with the speed of 3.0 m/s.
A copper telephone wire has essentially no sag between poles 20.5 meters apart on a winter day while the temperature is -15.5° C. How much longer is the wire on the summer day when the temperature is 27.0° C.
IP Halley's Comet Halley's Comet, which passes around the Sun every 78 years, has an elliptical orbit. When closest to the Sun (perihelion) it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between Hall..
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