A 20kg cart is tied to a 30kg cart on a slope of 10o. Assume the wheels are frictionless. With what force pulling on the 30kg cart will produce and acceleration of 2 m/s2 uphill? What is the tension between cart 1 and 2?
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A 20kg cart is tied to a 30kg cart on a slope of 10o. Assume the wheels are frictionless. With what force pulling on the 30kg cart will produce and acceleration of 2 m/s2 uphill? What is the tension between cart 1 and 2?
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- ol nt... 7 2 W S 6. A mass m₁ = 4.80 kg block on a tabletop is attached by a string to a hanging block of mass m₂ = 3.00 kg, as shown in the figure. The coefficient of kinetic friction between the mass (m₁) and the surface is 0.29. The blocks are released from rest and allowed to move freely. Find the magnitude of the tension in the string. N 3 E 80 F3. 4 288 R F % 5 246 T G 6 16 ceil6 ceil6 ceil6 ceil6 cesto co B 21910291999 MacBook Air FO Y & 7 m₂ H U 8 J FB ( 9 M K 16 ceiló cerlo ceiló cel cc116 ceil6 ccilo ceiló ceilo O 4 16. cci PYou bring a bathroom scale onto an elevator and press "up". Your mass is 65 kg. If the bathroom scale reads 750 N, (a) what is the acceleration of the elevator? You then press down and the acceleration downward is of the same magnitude. (b) While accelerating downward, you hold a small mass of 100 g attached to a string. What is the tension in the string? This elevator is in the new BU Data Science building where g = 10 m/s². Your work should include free body diagrams= 4. Consider the figure below, which has two objects of mass mi 3 kg connected by a taut rope. m2 Fp m2 Frictionless Finger Ms, Mk = The ramp is at an angle of 0 40° and has the peculiar property that it is frictionless along the tilted surface, but not along its vertical surface. (a) Ignore Fp for this part. What are the magnitude and direction of the acceleration experienced by the two objects? What is the magnitude of the tension force from the rope? (b) As the objects are moving, you apply a force on object 2 (using a frictionless finger) with magnitude Fp 50 N directly leftward (as seen in the figure). Upon doing this, you observe that the objects now move with constant speed. What is ? m₁ Frictionless 5 kg and
- A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.7 m/s2. (a) If the tension in the cord is 63 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 1.7 m/s2?An Atwood machine consists of two masses hanging from the ends of a rope that passes over a pulley. Assume that the rope and pulley are massless and that there is no friction in the pulley. If the masses have the values ?1=19.5 kg and ?2=12.5 kg, find the magnitude of their acceleration ? and the tension ? in the rope. Use ?=9.81 m/s2.A 2140 kg car traveling to the west at 17.1 m/s slows down uniformly. How long would it take the car to come to a stop if the force on the car is 8560 N to the east? Let East be positive.Answer in units of s. What is the car’s displacement during the time it takes to stop?Answer in units of m.
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- If a mass of 3.46 kg object is attached to a string. If the force of tension in the string is 50.2 N j, what is the magnitude of the object's acceleration?When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 965 N and the drag force has a magnitude of 1016 N. The mass of the sky diver is 98.5 kg. Take upward to be the positive direction. What is his acceleration, including sign?A 140 kg wooden crate resting on a wood floor. The coefficients of stattic and kinetic friction here are μs =0.5 and μk=0.3. WHat maximum force, in newtons, can you exert horizontally on the crate without moving it? If you continue to extert this force once the crate starts to slip, what will its accelertation be in m/s2?