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- A 247N crate resting on a plane inclined 25-degrees with the horizontal requires a 28N force to bring it down to 7.1m from its initial position. The force is applied 67-degrees with respect to the horizontal. Neglecting friction between the crate and plane, determine the time (in seconds) that the crate had travelled a distance of 7.1m. Answer in two decimal places. Numerical values only. Don't indicate units here, just on the submitted solution. You Answered 2.07 Correct Answer 1.69 margin of error +/- 0.01A rocket with a mass of 1 ton is launched vertically. Its initial speed at T = 0 is 1200 km/h, its friction with the air is 200N. Find. a) Differential equation in terms of b, m and g. b) The solution of the differential equation for V. c) The value of the velocity with t= 1 min, 2 min.can you pls answer a-e. a is not in the pic but reads: if mass is 85kg. and the applied force is 95N at 27degrees above the horizontal. what is the coefficient of kinetic friction? here’s b-e. thank u!!!!
- A helicopter with mass 2.95 x 104 kg has a position given by r(t) = (0.050ti + 5.5tj - 0.090t-k) m. Find the net force on the helicopter at t = 3.0 s. (Express your answer in vector form. Assume that Fis in newtons when t is in seconds. Do not include units in your answer.)Two forces act on a 4.15-kg object: 31.1 N in the +x direction and 68.5 N in the -y direction. What is the amount of the object's acceleration (in m/s )? [3 sig. figs.] Answer. -9.01 What is the direction of the object's acceleration (in degrees counterclockwise from +x) [3 sig. figs.] Answer. 75.2A 2-kg hanging mass (m,) is connected by a string over a pulley to a 20-kg block (m2) that is sliding on a 50° fixed inclined plane (see the figure below). If the pulley's mass and the mass of the string are negligible, and all surfaces are frictionless, the magnitude of the acceleration (in m/s2) of the moving system is: А. 7.14 a В. 9.8 C. 5.93 m2 D. 3.56 la E. 0.48 A B C D E
- A 284N crate resting on a plane inclined 37-degrees with the horizontal requires a 23.9N force to bring it down to 6.4m from its initial position. The force is applied 55-degrees with respect to the horizontal. Neglecting friction between the crate and plane, determine the time (in seconds) that the crate had travelled a distance of 6.4m. Answer in two decimal places. Numerical values only. Don't indicate units here, just on the submitted solution.A motor exerts F = 20t2 N on the cable which pulls a crate (m = 25 kilos) towards the right. Variable t (time) is in seconds. After 4 seconds, what should be the velocity of the crate? Coefficients for friction are 0.3 (static) and 0.25 (kinetic).An object with a mass of 1.76 kg is initially at rest upon a horizontal, frictionless surface. An applied force of 3.04 N i acts on the object for 2.08 s. What is the object's final speed? Enter a number rounded to 2 decimal places and assume the answer has proper SI Units.
- A dockworker applies a constant horizontal force of 75.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 12.0 m in 4.8 s. What is the mass (in kg) of the block of ice? (Round your answer to one digit after decimal point)The system shown in the figure below is used to lift an object of mass m 63.0 kg. A constant downward force of magnitude F is applied to the loose end of the rope such that the hanging object moves upward at constant speed. Neglecting the masses of the rope and pulleys, find the following. (a) Find the required value of F. 280 Your response is within 10% of the correct value, This roay be due to roundoff error, or you could have a mistake in your calculation, Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. N (b) Find the tensions T, T, and T (T, indicates the tension in the rope which attaches the pulley to the ceiling.) x Your answer cannot be understood or graded. More Information N T1 - mg/2 mg T2 Enter a number. N T mg Enter a number. N (c) Find the work done by the ppplied force in raising the object a distance of 2.20 m.An object with a mass of 4kg lies on a rough plane inclined at 20 degrees to horizontal. A force of 35N is applied parallel and up the plane. The object accelerates at 2.5m/s^2. What is the Uk between the object and plane