The figure shows an acceleration-versus-force graph for three objects pulled by rubber bands. The mass of object 2 is 49 kg. What are the masses of objects 1 and 3? 5a,- 4a,- За, 3 2a, - la,- 3 4 5 6 Force (number of rubber bands) Acceleration (multiples of a,)
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- A stack of two crates is being accelerated upwards by two cables. The cables are directly attached to crate 1 and the tension in each cable is 3248 N. You may assume that the masses of the cables are negligible compared to the masses of the crates. The acceleration of the crates is? bottom crate crate 1 is 109 kg. the top crate is 248 kg.A constant net force causes an acceleration of 20 m/s². What will be the acceleration of the object if the force is halved? Enter to 2 significant figures m/s² a = A constant net force causes an acceleration of 20 m/s². What will be the acceleration of the object if the mass is doubled? Enter to 2 significant figures m/s² a =Blocks 1 and 2 are moving to the right on a frictionless surface by the tension TB = 36 N as shown. m1 = 2.0 kg, and m2 = 3.2 kg. What is the magnitude of the acceleration of block 2, in m/s²? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. m₁ TA m₂ TB
- An object of mass 5 kg is acted on by two forces F1 = 6 i N and F2 = 7 j N. What is the magnitude of the net acceleration? Give your answer in m/s2 to 2 sf. The magnitude must be a positive number.The 17-Mg truck hauls the 33-Mg trailer. If the unit starts from rest on a level road with a tractive force of 25 kN between the driving wheels of the truck and the road, compute the tension T in the horizontal drawbar and the acceleration a of the rig. 33 Mg 17 Mg O O O O O Answers: T= i a= i KN m/s² OTwo blocks are stacked as shown. The blocks have masses m1 = 5.45 kg and m2 = 2m1. The kinetic coefficient of friction between the two blocks is μ1 = 0.456, while the kinetic coefficient of friction between Block 2 and the tabletop is μ1/4. A rightward force of F = 81 Newtons is exerted on Block 1. Calculate the acceleration of Block 1 in m/s2.
- Martha is pushing a 35 kg chair across the floor. The coefficients of friction between the chair and floor are ? s = 0.70 and ? k = 0.40. a. How hard does she need to push horizontally to just start the chair moving? b. If she applies this same force once it is moving, then what is the resulting acceleration? Draw the free-body diagram for this situation.A truck is driving forward with a 90 kg crate on the back. The coefficient of static friction between the crate and truck is µ-0.28. What is the fastest rate the truck could accelerate forward, in m/s², without the crate slipping off the back?Bran is pushing Amira in a sled. The combined mass of the sled and Amira is 40.0 kg. There is a coefficient of kinetic friction between the led and the snow of 0.205. Bran applies a 160 N pushing force at 30.0° below the horizontal. What is Amira's acceleration? (Give your answer in m/s2.)
- The tension at which a fishing line snaps is commonly called the line's "strength." What minimum strength is needed for a line that is to stop a salmon of weight 92 N in 12 cm if the fish is initially drifting horizontally at 2.7 m/s? Assume a constant deceleration. Number i UnitsA 4 kg block is sliding down a vertical wall while being pushed by an external force as shown in the figure. What is the magnitude of the acceleration of the block (in m/s2) if the coefficient of kinetic friction between the wall and the block is uj, = 0.20 and the magnitude of the external force is 20 N? 4 kg 30 X 8.8The masses of the Atwood's machine are M = 10 kg and m = 2.3 kg, respectively. The acceleration (m/s2) of the system is: