How long is beam if balances when fulcrum is placed
A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0-kg, and a 40.0-kg child sits on the other end. The beam balances when a fulcrum is placed below the beam a distance 1.10-m from the 30.0-kg child. How long is the beam?
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Two identical point charges (q = +5.40 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.510 m. A test charge (q0 = -4.50 x 10-8 C), with a mass of 9.60 x 10-8 kg, is released from rest at one of the corners of the s
A 40.0-kg child sits on the other end. The beam balances when a fulcrum is placed below the beam a distance 1.10-m from the 30.0-kg child. How long is the beam?
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A 5.0 kg Steel block is resting on a *horizontal table*. The coefficient of static friction (us) is 0.75 and the uk is 0.57. What minimum force is needed to start this block moving?
Calculate the amplitude at point on the string a distance of 25.0 from the left-hand end of the string.
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