Recent content by shepherd882

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    Using the angular momentum principle for 2 pucks

    the distance that the string is pulled on puck 2?
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    Using the angular momentum principle for 2 pucks

    Homework Statement Two pucks are lying on ice where they can slide and rotate with almost no friction. A string is tied to both pucks but it is tied to the middle of the first puck and wrapped around the second puck. You pull on both strings with the same force, F. The first puck moves without...
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    Calculating tensions and acceleration

    I got those equations How do you simplify this...?
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    Calculating tensions and acceleration

    That's what I got for T1 and T2 for part a) ...
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    Calculating tensions and acceleration

    for part a), would i just substitute acceleration into each of the tension equations then simplify? also for part b), the difference would be that mass 3 has the normal force at an angle which would add to the fnetx component. am i on the right track?
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    Calculating tensions and acceleration

    Homework Statement A mass M1 is sliding across a table with coefficient of kinetic friction μk. A string is tied to this mass and runs over a pulley, drops vertically and is tied to another mass M2 which is falling. The pulley is connected to the table by a support. The pulley is a solid...
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    Kinetic Energy for particles (alpha decay)

    Homework Statement Many heavy nuclei undergo spontaneous "alpha decay," in which the original nucleus emits an alpha particle (a helium nucleus containing two protons and two neutrons), leaving behind a "daughter" nucleus that has two fewer protons and two fewer neutrons than the original...
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    Find the speed of an object using work and energy

    Homework Statement An object with mass 100 kg moved in outer space. When it was at location < 9,-24,-4 > its speed was 3.5 m/s. A single constant force < 250,400,-170 > N acted on the object while the object moved from location < 9,-24,-4 > m to location < 15,-17,-8 > m. Then a different single...
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    Calculate the work done moving a crate

    Homework Statement you push a box out of a carpeted room and along a hallway with a waxed linoleum floor. While pushing the crate 2 m out of the room you exert a force of 34 N; while pushing it 6 m along the hallway you exert a force of 13 N. To slow it down you exert a force of 40 N through a...
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    Finding effective spring constants

    for part b) would it be like this: equation 1: Fnet = k1s + k2s equation 2: F = kas combined equation: ka = k1 + k2 Thank you for your help!
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    Finding effective spring constants

    Homework Statement a) Consider 2 springs, connected in series. If they have different spring constants k1 and k2 then what is the effective spring constant for the double spring system? Give a convincing argument for your formula. You may assume that the mass of the springs is negligible. b)...
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