Recent content by invadertak

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    Clockwise or counterclockwise rotation about a fulcrum

    Sorry-one correction- FL=675N - FR
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    Clockwise or counterclockwise rotation about a fulcrum

    Homework Statement The diagram shows a uniform plank of length 5m and weight 225N that rests horizontally on two supports, with 1.1 m hanging over the right support. To what distance x can a person who weighs 450 N walk on the overhanging part of the plank before it just begins to tip...
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    Semester one assignment: Find the angular speed

    awesome!
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    Semester one assignment: Find the angular speed

    Homework Statement A thin rod of lenth 1.5m is oriented vertically, with its bottom end attached to the floor by means of a frcitionless hinge. The mass of the rod may be ignored compared to the mass of and object ixed to the top of the rod. The rod, starting from rest, tips over and rotates...
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    Centripetal and Tangential Acceleration of drill bit

    Homework Statement An electric drill bit starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a certain angle, the magnitude of the centripetal acceleration is twice the magnitude of the tangential acceleration. What is the angle? Homework...
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    Rotational motion and angular displacement

    Thanks. I thought about using straightforward projectile motion, but I'd just started the section on rotational motion and it seemed a bit soon in the exercises to start using anything other than the formulas for angular displacement and velocity.
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    Rotational motion and angular displacement

    Homework Statement A baton twirler throws a spinning baton directly upward. As it goes up and returns to the twirlers hands, the baton turns through four revolutions. Ignoring air resistance and assuming that the average angular speed is 1.80 rev/s, determine the height to which the center...