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Blocks A and B have masses of 4 kg and 1.5 kg, respectively, and are connected by a cord-and-pulley system and released from rest in the position shown
Blocks A and C are connected by a rope that passes over drum B. Knowing that the drum rotates slowly clockwise and that the coefficients of friction
Block A weighs 80 lb, and block B weighs 16 lb. The coefficients of friction between all surfaces of contact are e 0.20 µs = and 0.15.
Block A can move without friction in the slot as shown and is acted upon by a vertical periodic force of magnitude
Ball B is hanging from an inextensible cord. An identical ball A is released from rest when it is just touching the cord and drops through the vertical distance
Automobiles A and B are traveling in adjacent highway lanes and at t = 0 have the positions and speeds shown
Automobile A starts from O and accelerates at the constant rate of 0.75 m/s2. A short time later it is passed by bus B which is traveling in the opposite
Bars BC and EF are connected at G by a pin that is attached to BC and that can slide freely in a slot cut in EF.
Bars AB and BC each of length l and of negligible weight are attached to two spring each of constant k
Bar BDE is attached to two links AB and CD. Knowing that at the instant shown link AB rotates with a constant angular velocity of 3 rad/s clockwise
Bar AC is attached to a hinge at A and to a spring of constant k that is undeformed when the bar is vertical. Knowing that the spring can act in either tension
Bar AB is rotating counterclockwise and, at the instant shown, the magnitude of the velocity of point G is 2.5 m/s
Block C starts from rest and moves down with a constant acceleration. Knowing that after block A has moved 0.5 m its velocity is 0.2 m/s
Block A of mass m is attached to a cord which is wrapped around a uniform disk of mass M. The block is released from rest and falls through a distance
Block A moves down with a constant velocity of 1 m/s.
Based on observations, the speed of a jogger can be approximated by the relation v = 7.5 (1 0.04x) 0.3, where v and x are expressed in km/h and kilometers
Based on observations made during the 1996 sighting of the comet Hyakutake, it was concluded that the trajectory of the comet is a highly elongated ellipse
At the instant shown, race car A is passing race car B with a relative velocity of 1 m/s
At the instant shown, slider block B is moving to the right with a constant acceleration, and its speed is 6 in./s.
At the instant shown, the velocity of collar A is 0.4 m/s to the right and the velocity of collar B is 1 m/s to the left.
At the instant shown the angular velocity of bar DE is 4 rad/s clockwise and its angular acceleration is 10 rad/s2 counterclockwise.
At the instant shown the tensions in the vertical ropes AB and DE are 300N and 200N, respectively. Knowing that the mass of the uniform bar BE is 5kg
At the instant shown, bar DE has a constant angular velocity of 35 rad/s clockwise. Determine at that instant
At an intersection car B was traveling south and car A was traveling 30° north of east when they slammed into each other
As shown in Fig. an elastic exercise band is grasped and then is stretched. Knowing that the tension in portion DE of the band is 70 N