Question 3 Acceleration will always be in the direction of the force. True False Question 4 A force will always be in the direction of motion. True False
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- 3.8Jack pulls a cart with a force of 30 N by a rope tied to a cart and making an angle of 25° with the horizontal. If the cart has a mass of 12.0 kg and the surface is frictionless, then (a) What is the acceleration of the cart? (b) How fast is the cart going after being pulled for 10 seconds? ( assume that the cart starts at rest). 20. N 25 HorizontalThe hanging sphere off the table has a mass of 2.51 kg. The string makes a 32.9° angle to the ceiling. How much does the sphere weigh? Find T1 Find T2 The block on the table does not move. How much friction must be acting between the table and the block?
- 9. A 95.0 N force bearing 72.0° and a 115 N force bearing 125° are both pulling on a 7.5 kg object. Determine the object's displacement after 5.00 s, assuming there is no friction and the object starts from rest. Include a free-body diagram and a vector diagram with your solution.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 Opart 1 A man is pulling on a rope with a force of 74 N directed at an angle of 44◦ to the horizontal. What is the x-component of this force? Answer in units of N. part 2 What is the y-component of this force? Answer in units of N
- A toy train accelerates with a constant acceleration of 1.0 meter per second squared. Thetrain consists of an engine with a mass of 450. grams pulling a box car with a mass of 75.0 grams and a caboose at the end with a mass of 55.0 grams. What force does the engine exert on the box car? What force does the box car exert on the engine? What force does the box car exert on the caboose? What force does the caboose exert on the box car? For the purposes of this question you may ignore the force of friction though of course, the train would have a mighty hard time accelerating without being able to exert a frictional force on the track.1.3 f a system is isolated: a. The velocities of all objects must sum to exactly zero. b. Sum of all the forces must be 3.14159 Newtons c. The vector sum of all external forces acting on the system must be zero. d. It will interact with the external environment.One rope pulls a barge directly east with a force of 58 N, and another rope pulls the barge directly north with a force of 71 N. Find the magnitude of the resultant force acting on the barge. A) 13 N B) 92 N C) 4118 N D) 129 N
- Question 6 kg 4 kg 25° A 4 kg block suspended in the air is held at rest by a massless string (and massless pulley) connecting it to a second 6 kg block on a 25° inclined ramp. There is static friction between the 6 kg block and the ramp. Find the static frictional force needed to keep the system at rest? AnswerHow much force does an 69 kg astronaut exert on his chair while sitting at res on the launch pad? Express your answer in newtons. F Submit Part B F= VE ΑΣΦ Submit Request Answer How much force does the astronaut exert on his chair while accelerating up at 14 m/s² ? Express your answer in newtons. VE ΑΣΦ Request Answer ? W N ? N